Annotation of mandoc/roff.c, Revision 1.316
1.316 ! schwarze 1: /* $Id: roff.c,v 1.315 2017/06/18 17:36:03 schwarze Exp $ */
1.1 kristaps 2: /*
1.267 schwarze 3: * Copyright (c) 2008-2012, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
1.287 schwarze 4: * Copyright (c) 2010-2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
1.1 kristaps 5: *
6: * Permission to use, copy, modify, and distribute this software for any
1.66 kristaps 7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
1.1 kristaps 9: *
1.106 kristaps 10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHORS DISCLAIM ALL WARRANTIES
1.66 kristaps 11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
1.106 kristaps 12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR
1.66 kristaps 13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15: * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16: * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
1.1 kristaps 17: */
1.66 kristaps 18: #include "config.h"
1.225 schwarze 19:
20: #include <sys/types.h>
1.30 kristaps 21:
1.67 kristaps 22: #include <assert.h>
1.85 kristaps 23: #include <ctype.h>
1.245 schwarze 24: #include <limits.h>
1.295 schwarze 25: #include <stddef.h>
26: #include <stdint.h>
1.178 schwarze 27: #include <stdio.h>
1.1 kristaps 28: #include <stdlib.h>
1.67 kristaps 29: #include <string.h>
1.1 kristaps 30:
1.67 kristaps 31: #include "mandoc.h"
1.201 schwarze 32: #include "mandoc_aux.h"
1.295 schwarze 33: #include "mandoc_ohash.h"
1.265 schwarze 34: #include "roff.h"
1.226 schwarze 35: #include "libmandoc.h"
1.266 schwarze 36: #include "roff_int.h"
1.109 kristaps 37: #include "libroff.h"
1.82 kristaps 38:
1.170 schwarze 39: /* Maximum number of string expansions per line, to break infinite loops. */
40: #define EXPAND_LIMIT 1000
41:
1.315 schwarze 42: /* Types of definitions of macros and strings. */
43: #define ROFFDEF_USER (1 << 1) /* User-defined. */
44: #define ROFFDEF_PRE (1 << 2) /* Predefined. */
45: #define ROFFDEF_REN (1 << 3) /* Renamed standard macro. */
46: #define ROFFDEF_STD (1 << 4) /* mdoc(7) or man(7) macro. */
47: #define ROFFDEF_ANY (ROFFDEF_USER | ROFFDEF_PRE | \
48: ROFFDEF_REN | ROFFDEF_STD)
49:
1.266 schwarze 50: /* --- data types --------------------------------------------------------- */
51:
1.147 kristaps 52: /*
1.167 kristaps 53: * An incredibly-simple string buffer.
54: */
1.94 kristaps 55: struct roffstr {
1.167 kristaps 56: char *p; /* nil-terminated buffer */
57: size_t sz; /* saved strlen(p) */
1.166 kristaps 58: };
59:
60: /*
1.167 kristaps 61: * A key-value roffstr pair as part of a singly-linked list.
1.166 kristaps 62: */
63: struct roffkv {
64: struct roffstr key;
65: struct roffstr val;
66: struct roffkv *next; /* next in list */
1.94 kristaps 67: };
68:
1.180 schwarze 69: /*
70: * A single number register as part of a singly-linked list.
71: */
72: struct roffreg {
73: struct roffstr key;
1.181 schwarze 74: int val;
1.180 schwarze 75: struct roffreg *next;
76: };
77:
1.295 schwarze 78: /*
79: * Association of request and macro names with token IDs.
80: */
81: struct roffreq {
82: enum roff_tok tok;
83: char name[];
84: };
85:
1.67 kristaps 86: struct roff {
1.128 kristaps 87: struct mparse *parse; /* parse point */
1.296 schwarze 88: struct roff_man *man; /* mdoc or man parser */
1.67 kristaps 89: struct roffnode *last; /* leaf of stack */
1.223 schwarze 90: int *rstack; /* stack of inverted `ie' values */
1.295 schwarze 91: struct ohash *reqtab; /* request lookup table */
1.180 schwarze 92: struct roffreg *regtab; /* number registers */
1.166 kristaps 93: struct roffkv *strtab; /* user-defined strings & macros */
1.306 schwarze 94: struct roffkv *rentab; /* renamed strings & macros */
1.167 kristaps 95: struct roffkv *xmbtab; /* multi-byte trans table (`tr') */
96: struct roffstr *xtab; /* single-byte trans table (`tr') */
1.106 kristaps 97: const char *current_string; /* value of last called user macro */
1.118 kristaps 98: struct tbl_node *first_tbl; /* first table parsed */
99: struct tbl_node *last_tbl; /* last table parsed */
100: struct tbl_node *tbl; /* current table being parsed */
1.125 kristaps 101: struct eqn_node *last_eqn; /* last equation parsed */
102: struct eqn_node *first_eqn; /* first equation parsed */
103: struct eqn_node *eqn; /* current equation being parsed */
1.230 schwarze 104: int eqn_inline; /* current equation is inline */
1.223 schwarze 105: int options; /* parse options */
106: int rstacksz; /* current size limit of rstack */
107: int rstackpos; /* position in rstack */
1.227 schwarze 108: int format; /* current file in mdoc or man format */
1.273 schwarze 109: int argc; /* number of args of the last macro */
1.223 schwarze 110: char control; /* control character */
1.303 schwarze 111: char escape; /* escape character */
1.79 kristaps 112: };
113:
1.67 kristaps 114: struct roffnode {
1.294 schwarze 115: enum roff_tok tok; /* type of node */
1.67 kristaps 116: struct roffnode *parent; /* up one in stack */
117: int line; /* parse line */
118: int col; /* parse col */
1.106 kristaps 119: char *name; /* node name, e.g. macro name */
1.79 kristaps 120: char *end; /* end-rules: custom token */
121: int endspan; /* end-rules: next-line or infty */
1.198 schwarze 122: int rule; /* current evaluation rule */
1.67 kristaps 123: };
124:
125: #define ROFF_ARGS struct roff *r, /* parse ctx */ \
1.294 schwarze 126: enum roff_tok tok, /* tok of macro */ \
1.238 schwarze 127: struct buf *buf, /* input buffer */ \
1.67 kristaps 128: int ln, /* parse line */ \
1.75 kristaps 129: int ppos, /* original pos in buffer */ \
130: int pos, /* current pos in buffer */ \
1.74 kristaps 131: int *offs /* reset offset of buffer data */
1.67 kristaps 132:
133: typedef enum rofferr (*roffproc)(ROFF_ARGS);
134:
135: struct roffmac {
1.79 kristaps 136: roffproc proc; /* process new macro */
137: roffproc text; /* process as child text of macro */
138: roffproc sub; /* process as child of macro */
139: int flags;
140: #define ROFFMAC_STRUCT (1 << 0) /* always interpret */
1.67 kristaps 141: };
142:
1.141 kristaps 143: struct predef {
144: const char *name; /* predefined input name */
145: const char *str; /* replacement symbol */
146: };
147:
148: #define PREDEF(__name, __str) \
149: { (__name), (__str) },
150:
1.266 schwarze 151: /* --- function prototypes ------------------------------------------------ */
152:
1.155 kristaps 153: static void roffnode_cleanscope(struct roff *);
154: static void roffnode_pop(struct roff *);
1.294 schwarze 155: static void roffnode_push(struct roff *, enum roff_tok,
1.155 kristaps 156: const char *, int, int);
1.311 schwarze 157: static enum rofferr roff_als(ROFF_ARGS);
1.80 kristaps 158: static enum rofferr roff_block(ROFF_ARGS);
159: static enum rofferr roff_block_text(ROFF_ARGS);
160: static enum rofferr roff_block_sub(ROFF_ARGS);
1.296 schwarze 161: static enum rofferr roff_br(ROFF_ARGS);
1.80 kristaps 162: static enum rofferr roff_cblock(ROFF_ARGS);
1.174 kristaps 163: static enum rofferr roff_cc(ROFF_ARGS);
1.195 schwarze 164: static void roff_ccond(struct roff *, int, int);
1.82 kristaps 165: static enum rofferr roff_cond(ROFF_ARGS);
166: static enum rofferr roff_cond_text(ROFF_ARGS);
167: static enum rofferr roff_cond_sub(ROFF_ARGS);
1.92 schwarze 168: static enum rofferr roff_ds(ROFF_ARGS);
1.303 schwarze 169: static enum rofferr roff_ec(ROFF_ARGS);
170: static enum rofferr roff_eo(ROFF_ARGS);
1.238 schwarze 171: static enum rofferr roff_eqndelim(struct roff *, struct buf *, int);
1.271 schwarze 172: static int roff_evalcond(struct roff *r, int, char *, int *);
1.234 kristaps 173: static int roff_evalnum(struct roff *, int,
174: const char *, int *, int *, int);
175: static int roff_evalpar(struct roff *, int,
1.261 schwarze 176: const char *, int *, int *, int);
1.198 schwarze 177: static int roff_evalstrcond(const char *, int *);
1.155 kristaps 178: static void roff_free1(struct roff *);
1.180 schwarze 179: static void roff_freereg(struct roffreg *);
1.167 kristaps 180: static void roff_freestr(struct roffkv *);
1.212 schwarze 181: static size_t roff_getname(struct roff *, char **, int, int);
1.261 schwarze 182: static int roff_getnum(const char *, int *, int *, int);
1.184 schwarze 183: static int roff_getop(const char *, int *, char *);
1.181 schwarze 184: static int roff_getregn(const struct roff *,
185: const char *, size_t);
1.273 schwarze 186: static int roff_getregro(const struct roff *,
187: const char *name);
1.207 schwarze 188: static const char *roff_getstrn(const struct roff *,
1.315 schwarze 189: const char *, size_t, int *);
1.271 schwarze 190: static int roff_hasregn(const struct roff *,
191: const char *, size_t);
1.251 schwarze 192: static enum rofferr roff_insec(ROFF_ARGS);
1.178 schwarze 193: static enum rofferr roff_it(ROFF_ARGS);
1.103 kristaps 194: static enum rofferr roff_line_ignore(ROFF_ARGS);
1.265 schwarze 195: static void roff_man_alloc1(struct roff_man *);
196: static void roff_man_free1(struct roff_man *);
1.300 schwarze 197: static enum rofferr roff_manyarg(ROFF_ARGS);
1.89 kristaps 198: static enum rofferr roff_nr(ROFF_ARGS);
1.297 schwarze 199: static enum rofferr roff_onearg(ROFF_ARGS);
1.294 schwarze 200: static enum roff_tok roff_parse(struct roff *, char *, int *,
1.214 schwarze 201: int, int);
1.305 schwarze 202: static enum rofferr roff_parsetext(struct roff *, struct buf *,
203: int, int *);
1.306 schwarze 204: static enum rofferr roff_renamed(ROFF_ARGS);
1.238 schwarze 205: static enum rofferr roff_res(struct roff *, struct buf *, int, int);
1.122 schwarze 206: static enum rofferr roff_rm(ROFF_ARGS);
1.306 schwarze 207: static enum rofferr roff_rn(ROFF_ARGS);
1.203 schwarze 208: static enum rofferr roff_rr(ROFF_ARGS);
1.94 kristaps 209: static void roff_setstr(struct roff *,
1.106 kristaps 210: const char *, const char *, int);
1.207 schwarze 211: static void roff_setstrn(struct roffkv **, const char *,
1.164 kristaps 212: size_t, const char *, size_t, int);
1.105 kristaps 213: static enum rofferr roff_so(ROFF_ARGS);
1.164 kristaps 214: static enum rofferr roff_tr(ROFF_ARGS);
1.175 schwarze 215: static enum rofferr roff_Dd(ROFF_ARGS);
1.109 kristaps 216: static enum rofferr roff_TE(ROFF_ARGS);
217: static enum rofferr roff_TS(ROFF_ARGS);
1.125 kristaps 218: static enum rofferr roff_EQ(ROFF_ARGS);
219: static enum rofferr roff_EN(ROFF_ARGS);
1.112 kristaps 220: static enum rofferr roff_T_(ROFF_ARGS);
1.251 schwarze 221: static enum rofferr roff_unsupp(ROFF_ARGS);
1.106 kristaps 222: static enum rofferr roff_userdef(ROFF_ARGS);
1.67 kristaps 223:
1.266 schwarze 224: /* --- constant data ------------------------------------------------------ */
225:
1.261 schwarze 226: #define ROFFNUM_SCALE (1 << 0) /* Honour scaling in roff_getnum(). */
227: #define ROFFNUM_WHITE (1 << 1) /* Skip whitespace in roff_evalnum(). */
228:
1.294 schwarze 229: const char *__roff_name[MAN_MAX + 1] = {
1.305 schwarze 230: "br", "ce", "ft", "ll",
1.312 schwarze 231: "mc", "po", "rj", "sp",
232: "ta", "ti", NULL,
1.294 schwarze 233: "ab", "ad", "af", "aln",
234: "als", "am", "am1", "ami",
235: "ami1", "as", "as1", "asciify",
236: "backtrace", "bd", "bleedat", "blm",
237: "box", "boxa", "bp", "BP",
238: "break", "breakchar", "brnl", "brp",
1.305 schwarze 239: "brpnl", "c2", "cc",
1.294 schwarze 240: "cf", "cflags", "ch", "char",
241: "chop", "class", "close", "CL",
242: "color", "composite", "continue", "cp",
243: "cropat", "cs", "cu", "da",
244: "dch", "Dd", "de", "de1",
245: "defcolor", "dei", "dei1", "device",
246: "devicem", "di", "do", "ds",
247: "ds1", "dwh", "dt", "ec",
248: "ecr", "ecs", "el", "em",
249: "EN", "eo", "EP", "EQ",
250: "errprint", "ev", "evc", "ex",
251: "fallback", "fam", "fc", "fchar",
252: "fcolor", "fdeferlig", "feature", "fkern",
253: "fl", "flig", "fp", "fps",
254: "fschar", "fspacewidth", "fspecial", "ftr",
255: "fzoom", "gcolor", "hc", "hcode",
256: "hidechar", "hla", "hlm", "hpf",
257: "hpfa", "hpfcode", "hw", "hy",
258: "hylang", "hylen", "hym", "hypp",
259: "hys", "ie", "if", "ig",
260: "index", "it", "itc", "IX",
261: "kern", "kernafter", "kernbefore", "kernpair",
262: "lc", "lc_ctype", "lds", "length",
263: "letadj", "lf", "lg", "lhang",
264: "linetabs", "lnr", "lnrf", "lpfx",
1.304 schwarze 265: "ls", "lsm", "lt",
1.294 schwarze 266: "mediasize", "minss", "mk", "mso",
267: "na", "ne", "nh", "nhychar",
268: "nm", "nn", "nop", "nr",
269: "nrf", "nroff", "ns", "nx",
270: "open", "opena", "os", "output",
271: "padj", "papersize", "pc", "pev",
272: "pi", "PI", "pl", "pm",
1.312 schwarze 273: "pn", "pnr", "ps",
1.294 schwarze 274: "psbb", "pshape", "pso", "ptr",
275: "pvs", "rchar", "rd", "recursionlimit",
1.309 schwarze 276: "return", "rfschar", "rhang",
1.294 schwarze 277: "rm", "rn", "rnn", "rr",
278: "rs", "rt", "schar", "sentchar",
279: "shc", "shift", "sizes", "so",
280: "spacewidth", "special", "spreadwarn", "ss",
281: "sty", "substring", "sv", "sy",
1.300 schwarze 282: "T&", "tc", "TE",
1.301 schwarze 283: "TH", "tkf", "tl",
1.294 schwarze 284: "tm", "tm1", "tmc", "tr",
285: "track", "transchar", "trf", "trimat",
286: "trin", "trnt", "troff", "TS",
287: "uf", "ul", "unformat", "unwatch",
288: "unwatchn", "vpt", "vs", "warn",
289: "warnscale", "watch", "watchlength", "watchn",
290: "wh", "while", "write", "writec",
291: "writem", "xflag", ".", NULL,
1.306 schwarze 292: NULL, "text",
1.294 schwarze 293: "Dd", "Dt", "Os", "Sh",
294: "Ss", "Pp", "D1", "Dl",
295: "Bd", "Ed", "Bl", "El",
296: "It", "Ad", "An", "Ap",
297: "Ar", "Cd", "Cm", "Dv",
298: "Er", "Ev", "Ex", "Fa",
299: "Fd", "Fl", "Fn", "Ft",
300: "Ic", "In", "Li", "Nd",
301: "Nm", "Op", "Ot", "Pa",
302: "Rv", "St", "Va", "Vt",
303: "Xr", "%A", "%B", "%D",
304: "%I", "%J", "%N", "%O",
305: "%P", "%R", "%T", "%V",
306: "Ac", "Ao", "Aq", "At",
307: "Bc", "Bf", "Bo", "Bq",
308: "Bsx", "Bx", "Db", "Dc",
309: "Do", "Dq", "Ec", "Ef",
310: "Em", "Eo", "Fx", "Ms",
311: "No", "Ns", "Nx", "Ox",
312: "Pc", "Pf", "Po", "Pq",
313: "Qc", "Ql", "Qo", "Qq",
314: "Re", "Rs", "Sc", "So",
315: "Sq", "Sm", "Sx", "Sy",
316: "Tn", "Ux", "Xc", "Xo",
317: "Fo", "Fc", "Oo", "Oc",
318: "Bk", "Ek", "Bt", "Hf",
319: "Fr", "Ud", "Lb", "Lp",
320: "Lk", "Mt", "Brq", "Bro",
321: "Brc", "%C", "Es", "En",
1.299 schwarze 322: "Dx", "%Q", "%U", "Ta",
323: NULL,
1.294 schwarze 324: "TH", "SH", "SS", "TP",
325: "LP", "PP", "P", "IP",
326: "HP", "SM", "SB", "BI",
327: "IB", "BR", "RB", "R",
328: "B", "I", "IR", "RI",
1.299 schwarze 329: "nf", "fi",
1.294 schwarze 330: "RE", "RS", "DT", "UC",
1.297 schwarze 331: "PD", "AT", "in",
1.294 schwarze 332: "OP", "EX", "EE", "UR",
1.298 schwarze 333: "UE", NULL
1.294 schwarze 334: };
335: const char *const *roff_name = __roff_name;
336:
337: static struct roffmac roffs[TOKEN_NONE] = {
1.296 schwarze 338: { roff_br, NULL, NULL, 0 }, /* br */
1.305 schwarze 339: { roff_onearg, NULL, NULL, 0 }, /* ce */
1.297 schwarze 340: { roff_onearg, NULL, NULL, 0 }, /* ft */
1.298 schwarze 341: { roff_onearg, NULL, NULL, 0 }, /* ll */
1.304 schwarze 342: { roff_onearg, NULL, NULL, 0 }, /* mc */
1.312 schwarze 343: { roff_onearg, NULL, NULL, 0 }, /* po */
1.309 schwarze 344: { roff_onearg, NULL, NULL, 0 }, /* rj */
1.299 schwarze 345: { roff_onearg, NULL, NULL, 0 }, /* sp */
1.300 schwarze 346: { roff_manyarg, NULL, NULL, 0 }, /* ta */
1.301 schwarze 347: { roff_onearg, NULL, NULL, 0 }, /* ti */
1.296 schwarze 348: { NULL, NULL, NULL, 0 }, /* ROFF_MAX */
1.295 schwarze 349: { roff_unsupp, NULL, NULL, 0 }, /* ab */
350: { roff_line_ignore, NULL, NULL, 0 }, /* ad */
351: { roff_line_ignore, NULL, NULL, 0 }, /* af */
352: { roff_unsupp, NULL, NULL, 0 }, /* aln */
1.311 schwarze 353: { roff_als, NULL, NULL, 0 }, /* als */
1.295 schwarze 354: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am */
355: { roff_block, roff_block_text, roff_block_sub, 0 }, /* am1 */
356: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami */
357: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ami1 */
358: { roff_ds, NULL, NULL, 0 }, /* as */
359: { roff_ds, NULL, NULL, 0 }, /* as1 */
360: { roff_unsupp, NULL, NULL, 0 }, /* asciify */
361: { roff_line_ignore, NULL, NULL, 0 }, /* backtrace */
362: { roff_line_ignore, NULL, NULL, 0 }, /* bd */
363: { roff_line_ignore, NULL, NULL, 0 }, /* bleedat */
364: { roff_unsupp, NULL, NULL, 0 }, /* blm */
365: { roff_unsupp, NULL, NULL, 0 }, /* box */
366: { roff_unsupp, NULL, NULL, 0 }, /* boxa */
367: { roff_line_ignore, NULL, NULL, 0 }, /* bp */
368: { roff_unsupp, NULL, NULL, 0 }, /* BP */
369: { roff_unsupp, NULL, NULL, 0 }, /* break */
370: { roff_line_ignore, NULL, NULL, 0 }, /* breakchar */
371: { roff_line_ignore, NULL, NULL, 0 }, /* brnl */
1.296 schwarze 372: { roff_br, NULL, NULL, 0 }, /* brp */
1.295 schwarze 373: { roff_line_ignore, NULL, NULL, 0 }, /* brpnl */
374: { roff_unsupp, NULL, NULL, 0 }, /* c2 */
375: { roff_cc, NULL, NULL, 0 }, /* cc */
376: { roff_insec, NULL, NULL, 0 }, /* cf */
377: { roff_line_ignore, NULL, NULL, 0 }, /* cflags */
378: { roff_line_ignore, NULL, NULL, 0 }, /* ch */
379: { roff_unsupp, NULL, NULL, 0 }, /* char */
380: { roff_unsupp, NULL, NULL, 0 }, /* chop */
381: { roff_line_ignore, NULL, NULL, 0 }, /* class */
382: { roff_insec, NULL, NULL, 0 }, /* close */
383: { roff_unsupp, NULL, NULL, 0 }, /* CL */
384: { roff_line_ignore, NULL, NULL, 0 }, /* color */
385: { roff_unsupp, NULL, NULL, 0 }, /* composite */
386: { roff_unsupp, NULL, NULL, 0 }, /* continue */
387: { roff_line_ignore, NULL, NULL, 0 }, /* cp */
388: { roff_line_ignore, NULL, NULL, 0 }, /* cropat */
389: { roff_line_ignore, NULL, NULL, 0 }, /* cs */
390: { roff_line_ignore, NULL, NULL, 0 }, /* cu */
391: { roff_unsupp, NULL, NULL, 0 }, /* da */
392: { roff_unsupp, NULL, NULL, 0 }, /* dch */
393: { roff_Dd, NULL, NULL, 0 }, /* Dd */
394: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de */
395: { roff_block, roff_block_text, roff_block_sub, 0 }, /* de1 */
396: { roff_line_ignore, NULL, NULL, 0 }, /* defcolor */
397: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei */
398: { roff_block, roff_block_text, roff_block_sub, 0 }, /* dei1 */
399: { roff_unsupp, NULL, NULL, 0 }, /* device */
400: { roff_unsupp, NULL, NULL, 0 }, /* devicem */
401: { roff_unsupp, NULL, NULL, 0 }, /* di */
402: { roff_unsupp, NULL, NULL, 0 }, /* do */
403: { roff_ds, NULL, NULL, 0 }, /* ds */
404: { roff_ds, NULL, NULL, 0 }, /* ds1 */
405: { roff_unsupp, NULL, NULL, 0 }, /* dwh */
406: { roff_unsupp, NULL, NULL, 0 }, /* dt */
1.303 schwarze 407: { roff_ec, NULL, NULL, 0 }, /* ec */
1.295 schwarze 408: { roff_unsupp, NULL, NULL, 0 }, /* ecr */
409: { roff_unsupp, NULL, NULL, 0 }, /* ecs */
410: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* el */
411: { roff_unsupp, NULL, NULL, 0 }, /* em */
412: { roff_EN, NULL, NULL, 0 }, /* EN */
1.303 schwarze 413: { roff_eo, NULL, NULL, 0 }, /* eo */
1.295 schwarze 414: { roff_unsupp, NULL, NULL, 0 }, /* EP */
415: { roff_EQ, NULL, NULL, 0 }, /* EQ */
416: { roff_line_ignore, NULL, NULL, 0 }, /* errprint */
417: { roff_unsupp, NULL, NULL, 0 }, /* ev */
418: { roff_unsupp, NULL, NULL, 0 }, /* evc */
419: { roff_unsupp, NULL, NULL, 0 }, /* ex */
420: { roff_line_ignore, NULL, NULL, 0 }, /* fallback */
421: { roff_line_ignore, NULL, NULL, 0 }, /* fam */
422: { roff_unsupp, NULL, NULL, 0 }, /* fc */
423: { roff_unsupp, NULL, NULL, 0 }, /* fchar */
424: { roff_line_ignore, NULL, NULL, 0 }, /* fcolor */
425: { roff_line_ignore, NULL, NULL, 0 }, /* fdeferlig */
426: { roff_line_ignore, NULL, NULL, 0 }, /* feature */
427: { roff_line_ignore, NULL, NULL, 0 }, /* fkern */
428: { roff_line_ignore, NULL, NULL, 0 }, /* fl */
429: { roff_line_ignore, NULL, NULL, 0 }, /* flig */
430: { roff_line_ignore, NULL, NULL, 0 }, /* fp */
431: { roff_line_ignore, NULL, NULL, 0 }, /* fps */
432: { roff_unsupp, NULL, NULL, 0 }, /* fschar */
433: { roff_line_ignore, NULL, NULL, 0 }, /* fspacewidth */
434: { roff_line_ignore, NULL, NULL, 0 }, /* fspecial */
435: { roff_line_ignore, NULL, NULL, 0 }, /* ftr */
436: { roff_line_ignore, NULL, NULL, 0 }, /* fzoom */
437: { roff_line_ignore, NULL, NULL, 0 }, /* gcolor */
438: { roff_line_ignore, NULL, NULL, 0 }, /* hc */
439: { roff_line_ignore, NULL, NULL, 0 }, /* hcode */
440: { roff_line_ignore, NULL, NULL, 0 }, /* hidechar */
441: { roff_line_ignore, NULL, NULL, 0 }, /* hla */
442: { roff_line_ignore, NULL, NULL, 0 }, /* hlm */
443: { roff_line_ignore, NULL, NULL, 0 }, /* hpf */
444: { roff_line_ignore, NULL, NULL, 0 }, /* hpfa */
445: { roff_line_ignore, NULL, NULL, 0 }, /* hpfcode */
446: { roff_line_ignore, NULL, NULL, 0 }, /* hw */
447: { roff_line_ignore, NULL, NULL, 0 }, /* hy */
448: { roff_line_ignore, NULL, NULL, 0 }, /* hylang */
449: { roff_line_ignore, NULL, NULL, 0 }, /* hylen */
450: { roff_line_ignore, NULL, NULL, 0 }, /* hym */
451: { roff_line_ignore, NULL, NULL, 0 }, /* hypp */
452: { roff_line_ignore, NULL, NULL, 0 }, /* hys */
453: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* ie */
454: { roff_cond, roff_cond_text, roff_cond_sub, ROFFMAC_STRUCT }, /* if */
455: { roff_block, roff_block_text, roff_block_sub, 0 }, /* ig */
456: { roff_unsupp, NULL, NULL, 0 }, /* index */
457: { roff_it, NULL, NULL, 0 }, /* it */
458: { roff_unsupp, NULL, NULL, 0 }, /* itc */
459: { roff_line_ignore, NULL, NULL, 0 }, /* IX */
460: { roff_line_ignore, NULL, NULL, 0 }, /* kern */
461: { roff_line_ignore, NULL, NULL, 0 }, /* kernafter */
462: { roff_line_ignore, NULL, NULL, 0 }, /* kernbefore */
463: { roff_line_ignore, NULL, NULL, 0 }, /* kernpair */
464: { roff_unsupp, NULL, NULL, 0 }, /* lc */
465: { roff_unsupp, NULL, NULL, 0 }, /* lc_ctype */
466: { roff_unsupp, NULL, NULL, 0 }, /* lds */
467: { roff_unsupp, NULL, NULL, 0 }, /* length */
468: { roff_line_ignore, NULL, NULL, 0 }, /* letadj */
469: { roff_insec, NULL, NULL, 0 }, /* lf */
470: { roff_line_ignore, NULL, NULL, 0 }, /* lg */
471: { roff_line_ignore, NULL, NULL, 0 }, /* lhang */
472: { roff_unsupp, NULL, NULL, 0 }, /* linetabs */
473: { roff_unsupp, NULL, NULL, 0 }, /* lnr */
474: { roff_unsupp, NULL, NULL, 0 }, /* lnrf */
475: { roff_unsupp, NULL, NULL, 0 }, /* lpfx */
476: { roff_line_ignore, NULL, NULL, 0 }, /* ls */
477: { roff_unsupp, NULL, NULL, 0 }, /* lsm */
478: { roff_line_ignore, NULL, NULL, 0 }, /* lt */
479: { roff_line_ignore, NULL, NULL, 0 }, /* mediasize */
480: { roff_line_ignore, NULL, NULL, 0 }, /* minss */
481: { roff_line_ignore, NULL, NULL, 0 }, /* mk */
482: { roff_insec, NULL, NULL, 0 }, /* mso */
483: { roff_line_ignore, NULL, NULL, 0 }, /* na */
484: { roff_line_ignore, NULL, NULL, 0 }, /* ne */
485: { roff_line_ignore, NULL, NULL, 0 }, /* nh */
486: { roff_line_ignore, NULL, NULL, 0 }, /* nhychar */
487: { roff_unsupp, NULL, NULL, 0 }, /* nm */
488: { roff_unsupp, NULL, NULL, 0 }, /* nn */
489: { roff_unsupp, NULL, NULL, 0 }, /* nop */
490: { roff_nr, NULL, NULL, 0 }, /* nr */
491: { roff_unsupp, NULL, NULL, 0 }, /* nrf */
492: { roff_line_ignore, NULL, NULL, 0 }, /* nroff */
493: { roff_line_ignore, NULL, NULL, 0 }, /* ns */
494: { roff_insec, NULL, NULL, 0 }, /* nx */
495: { roff_insec, NULL, NULL, 0 }, /* open */
496: { roff_insec, NULL, NULL, 0 }, /* opena */
497: { roff_line_ignore, NULL, NULL, 0 }, /* os */
498: { roff_unsupp, NULL, NULL, 0 }, /* output */
499: { roff_line_ignore, NULL, NULL, 0 }, /* padj */
500: { roff_line_ignore, NULL, NULL, 0 }, /* papersize */
501: { roff_line_ignore, NULL, NULL, 0 }, /* pc */
502: { roff_line_ignore, NULL, NULL, 0 }, /* pev */
503: { roff_insec, NULL, NULL, 0 }, /* pi */
504: { roff_unsupp, NULL, NULL, 0 }, /* PI */
505: { roff_line_ignore, NULL, NULL, 0 }, /* pl */
506: { roff_line_ignore, NULL, NULL, 0 }, /* pm */
507: { roff_line_ignore, NULL, NULL, 0 }, /* pn */
508: { roff_line_ignore, NULL, NULL, 0 }, /* pnr */
509: { roff_line_ignore, NULL, NULL, 0 }, /* ps */
510: { roff_unsupp, NULL, NULL, 0 }, /* psbb */
511: { roff_unsupp, NULL, NULL, 0 }, /* pshape */
512: { roff_insec, NULL, NULL, 0 }, /* pso */
513: { roff_line_ignore, NULL, NULL, 0 }, /* ptr */
514: { roff_line_ignore, NULL, NULL, 0 }, /* pvs */
515: { roff_unsupp, NULL, NULL, 0 }, /* rchar */
516: { roff_line_ignore, NULL, NULL, 0 }, /* rd */
517: { roff_line_ignore, NULL, NULL, 0 }, /* recursionlimit */
518: { roff_unsupp, NULL, NULL, 0 }, /* return */
519: { roff_unsupp, NULL, NULL, 0 }, /* rfschar */
520: { roff_line_ignore, NULL, NULL, 0 }, /* rhang */
521: { roff_rm, NULL, NULL, 0 }, /* rm */
1.306 schwarze 522: { roff_rn, NULL, NULL, 0 }, /* rn */
1.295 schwarze 523: { roff_unsupp, NULL, NULL, 0 }, /* rnn */
524: { roff_rr, NULL, NULL, 0 }, /* rr */
525: { roff_line_ignore, NULL, NULL, 0 }, /* rs */
526: { roff_line_ignore, NULL, NULL, 0 }, /* rt */
527: { roff_unsupp, NULL, NULL, 0 }, /* schar */
528: { roff_line_ignore, NULL, NULL, 0 }, /* sentchar */
529: { roff_line_ignore, NULL, NULL, 0 }, /* shc */
530: { roff_unsupp, NULL, NULL, 0 }, /* shift */
531: { roff_line_ignore, NULL, NULL, 0 }, /* sizes */
532: { roff_so, NULL, NULL, 0 }, /* so */
533: { roff_line_ignore, NULL, NULL, 0 }, /* spacewidth */
534: { roff_line_ignore, NULL, NULL, 0 }, /* special */
535: { roff_line_ignore, NULL, NULL, 0 }, /* spreadwarn */
536: { roff_line_ignore, NULL, NULL, 0 }, /* ss */
537: { roff_line_ignore, NULL, NULL, 0 }, /* sty */
538: { roff_unsupp, NULL, NULL, 0 }, /* substring */
539: { roff_line_ignore, NULL, NULL, 0 }, /* sv */
540: { roff_insec, NULL, NULL, 0 }, /* sy */
541: { roff_T_, NULL, NULL, 0 }, /* T& */
542: { roff_unsupp, NULL, NULL, 0 }, /* tc */
543: { roff_TE, NULL, NULL, 0 }, /* TE */
1.315 schwarze 544: { roff_Dd, NULL, NULL, 0 }, /* TH */
1.295 schwarze 545: { roff_line_ignore, NULL, NULL, 0 }, /* tkf */
546: { roff_unsupp, NULL, NULL, 0 }, /* tl */
547: { roff_line_ignore, NULL, NULL, 0 }, /* tm */
548: { roff_line_ignore, NULL, NULL, 0 }, /* tm1 */
549: { roff_line_ignore, NULL, NULL, 0 }, /* tmc */
550: { roff_tr, NULL, NULL, 0 }, /* tr */
551: { roff_line_ignore, NULL, NULL, 0 }, /* track */
552: { roff_line_ignore, NULL, NULL, 0 }, /* transchar */
553: { roff_insec, NULL, NULL, 0 }, /* trf */
554: { roff_line_ignore, NULL, NULL, 0 }, /* trimat */
555: { roff_unsupp, NULL, NULL, 0 }, /* trin */
556: { roff_unsupp, NULL, NULL, 0 }, /* trnt */
557: { roff_line_ignore, NULL, NULL, 0 }, /* troff */
558: { roff_TS, NULL, NULL, 0 }, /* TS */
559: { roff_line_ignore, NULL, NULL, 0 }, /* uf */
560: { roff_line_ignore, NULL, NULL, 0 }, /* ul */
561: { roff_unsupp, NULL, NULL, 0 }, /* unformat */
562: { roff_line_ignore, NULL, NULL, 0 }, /* unwatch */
563: { roff_line_ignore, NULL, NULL, 0 }, /* unwatchn */
564: { roff_line_ignore, NULL, NULL, 0 }, /* vpt */
565: { roff_line_ignore, NULL, NULL, 0 }, /* vs */
566: { roff_line_ignore, NULL, NULL, 0 }, /* warn */
567: { roff_line_ignore, NULL, NULL, 0 }, /* warnscale */
568: { roff_line_ignore, NULL, NULL, 0 }, /* watch */
569: { roff_line_ignore, NULL, NULL, 0 }, /* watchlength */
570: { roff_line_ignore, NULL, NULL, 0 }, /* watchn */
571: { roff_unsupp, NULL, NULL, 0 }, /* wh */
572: { roff_unsupp, NULL, NULL, 0 }, /* while */
573: { roff_insec, NULL, NULL, 0 }, /* write */
574: { roff_insec, NULL, NULL, 0 }, /* writec */
575: { roff_insec, NULL, NULL, 0 }, /* writem */
576: { roff_line_ignore, NULL, NULL, 0 }, /* xflag */
577: { roff_cblock, NULL, NULL, 0 }, /* . */
1.306 schwarze 578: { roff_renamed, NULL, NULL, 0 },
1.295 schwarze 579: { roff_userdef, NULL, NULL, 0 }
1.67 kristaps 580: };
581:
1.141 kristaps 582: /* Array of injected predefined strings. */
583: #define PREDEFS_MAX 38
584: static const struct predef predefs[PREDEFS_MAX] = {
585: #include "predefs.in"
586: };
587:
1.305 schwarze 588: static int roffce_lines; /* number of input lines to center */
589: static struct roff_node *roffce_node; /* active request */
1.178 schwarze 590: static int roffit_lines; /* number of lines to delay */
591: static char *roffit_macro; /* nil-terminated macro line */
592:
1.207 schwarze 593:
1.266 schwarze 594: /* --- request table ------------------------------------------------------ */
595:
1.295 schwarze 596: struct ohash *
597: roffhash_alloc(enum roff_tok mintok, enum roff_tok maxtok)
1.85 kristaps 598: {
1.295 schwarze 599: struct ohash *htab;
600: struct roffreq *req;
601: enum roff_tok tok;
602: size_t sz;
603: unsigned int slot;
1.85 kristaps 604:
1.295 schwarze 605: htab = mandoc_malloc(sizeof(*htab));
606: mandoc_ohash_init(htab, 8, offsetof(struct roffreq, name));
1.85 kristaps 607:
1.295 schwarze 608: for (tok = mintok; tok < maxtok; tok++) {
1.296 schwarze 609: if (roff_name[tok] == NULL)
610: continue;
1.295 schwarze 611: sz = strlen(roff_name[tok]);
612: req = mandoc_malloc(sizeof(*req) + sz + 1);
613: req->tok = tok;
614: memcpy(req->name, roff_name[tok], sz + 1);
615: slot = ohash_qlookup(htab, req->name);
616: ohash_insert(htab, slot, req);
1.85 kristaps 617: }
1.295 schwarze 618: return htab;
1.85 kristaps 619: }
620:
1.295 schwarze 621: void
622: roffhash_free(struct ohash *htab)
1.67 kristaps 623: {
1.295 schwarze 624: struct roffreq *req;
625: unsigned int slot;
1.67 kristaps 626:
1.295 schwarze 627: if (htab == NULL)
628: return;
629: for (req = ohash_first(htab, &slot); req != NULL;
630: req = ohash_next(htab, &slot))
631: free(req);
632: ohash_delete(htab);
633: free(htab);
634: }
635:
636: enum roff_tok
637: roffhash_find(struct ohash *htab, const char *name, size_t sz)
638: {
639: struct roffreq *req;
640: const char *end;
641:
642: if (sz) {
643: end = name + sz;
644: req = ohash_find(htab, ohash_qlookupi(htab, name, &end));
645: } else
646: req = ohash_find(htab, ohash_qlookup(htab, name));
647: return req == NULL ? TOKEN_NONE : req->tok;
1.67 kristaps 648: }
649:
1.266 schwarze 650: /* --- stack of request blocks -------------------------------------------- */
651:
1.67 kristaps 652: /*
653: * Pop the current node off of the stack of roff instructions currently
654: * pending.
655: */
656: static void
657: roffnode_pop(struct roff *r)
658: {
659: struct roffnode *p;
660:
1.75 kristaps 661: assert(r->last);
1.207 schwarze 662: p = r->last;
1.82 kristaps 663:
1.75 kristaps 664: r->last = r->last->parent;
1.106 kristaps 665: free(p->name);
666: free(p->end);
1.67 kristaps 667: free(p);
668: }
669:
670: /*
671: * Push a roff node onto the instruction stack. This must later be
672: * removed with roffnode_pop().
673: */
1.98 schwarze 674: static void
1.294 schwarze 675: roffnode_push(struct roff *r, enum roff_tok tok, const char *name,
1.106 kristaps 676: int line, int col)
1.67 kristaps 677: {
678: struct roffnode *p;
679:
1.98 schwarze 680: p = mandoc_calloc(1, sizeof(struct roffnode));
1.67 kristaps 681: p->tok = tok;
1.106 kristaps 682: if (name)
683: p->name = mandoc_strdup(name);
1.67 kristaps 684: p->parent = r->last;
685: p->line = line;
686: p->col = col;
1.198 schwarze 687: p->rule = p->parent ? p->parent->rule : 0;
1.67 kristaps 688:
689: r->last = p;
690: }
691:
1.266 schwarze 692: /* --- roff parser state data management ---------------------------------- */
693:
1.67 kristaps 694: static void
695: roff_free1(struct roff *r)
696: {
1.176 schwarze 697: struct tbl_node *tbl;
1.125 kristaps 698: struct eqn_node *e;
1.167 kristaps 699: int i;
1.67 kristaps 700:
1.176 schwarze 701: while (NULL != (tbl = r->first_tbl)) {
702: r->first_tbl = tbl->next;
703: tbl_free(tbl);
1.109 kristaps 704: }
1.113 kristaps 705: r->first_tbl = r->last_tbl = r->tbl = NULL;
706:
1.125 kristaps 707: while (NULL != (e = r->first_eqn)) {
708: r->first_eqn = e->next;
709: eqn_free(e);
710: }
711: r->first_eqn = r->last_eqn = r->eqn = NULL;
712:
1.67 kristaps 713: while (r->last)
714: roffnode_pop(r);
1.109 kristaps 715:
1.223 schwarze 716: free (r->rstack);
717: r->rstack = NULL;
718: r->rstacksz = 0;
719: r->rstackpos = -1;
720:
721: roff_freereg(r->regtab);
722: r->regtab = NULL;
723:
1.167 kristaps 724: roff_freestr(r->strtab);
1.306 schwarze 725: roff_freestr(r->rentab);
1.167 kristaps 726: roff_freestr(r->xmbtab);
1.306 schwarze 727: r->strtab = r->rentab = r->xmbtab = NULL;
1.167 kristaps 728:
729: if (r->xtab)
730: for (i = 0; i < 128; i++)
731: free(r->xtab[i].p);
732: free(r->xtab);
733: r->xtab = NULL;
1.67 kristaps 734: }
735:
736: void
737: roff_reset(struct roff *r)
738: {
739: roff_free1(r);
1.227 schwarze 740: r->format = r->options & (MPARSE_MDOC | MPARSE_MAN);
1.303 schwarze 741: r->control = '\0';
742: r->escape = '\\';
1.307 schwarze 743: roffce_lines = 0;
744: roffce_node = NULL;
745: roffit_lines = 0;
746: roffit_macro = NULL;
1.67 kristaps 747: }
748:
749: void
750: roff_free(struct roff *r)
751: {
752: roff_free1(r);
1.295 schwarze 753: roffhash_free(r->reqtab);
1.67 kristaps 754: free(r);
755: }
756:
757: struct roff *
1.279 schwarze 758: roff_alloc(struct mparse *parse, int options)
1.67 kristaps 759: {
760: struct roff *r;
761:
1.98 schwarze 762: r = mandoc_calloc(1, sizeof(struct roff));
1.128 kristaps 763: r->parse = parse;
1.295 schwarze 764: r->reqtab = roffhash_alloc(0, ROFF_USERDEF);
1.199 schwarze 765: r->options = options;
1.227 schwarze 766: r->format = options & (MPARSE_MDOC | MPARSE_MAN);
1.82 kristaps 767: r->rstackpos = -1;
1.303 schwarze 768: r->escape = '\\';
1.277 schwarze 769: return r;
1.265 schwarze 770: }
771:
1.266 schwarze 772: /* --- syntax tree state data management ---------------------------------- */
773:
1.265 schwarze 774: static void
775: roff_man_free1(struct roff_man *man)
776: {
777:
1.266 schwarze 778: if (man->first != NULL)
779: roff_node_delete(man, man->first);
1.265 schwarze 780: free(man->meta.msec);
781: free(man->meta.vol);
782: free(man->meta.os);
783: free(man->meta.arch);
784: free(man->meta.title);
785: free(man->meta.name);
786: free(man->meta.date);
787: }
788:
789: static void
790: roff_man_alloc1(struct roff_man *man)
791: {
792:
793: memset(&man->meta, 0, sizeof(man->meta));
794: man->first = mandoc_calloc(1, sizeof(*man->first));
795: man->first->type = ROFFT_ROOT;
796: man->last = man->first;
797: man->last_es = NULL;
798: man->flags = 0;
799: man->macroset = MACROSET_NONE;
800: man->lastsec = man->lastnamed = SEC_NONE;
801: man->next = ROFF_NEXT_CHILD;
802: }
803:
804: void
805: roff_man_reset(struct roff_man *man)
806: {
807:
808: roff_man_free1(man);
809: roff_man_alloc1(man);
810: }
811:
812: void
813: roff_man_free(struct roff_man *man)
814: {
815:
816: roff_man_free1(man);
817: free(man);
818: }
819:
820: struct roff_man *
821: roff_man_alloc(struct roff *roff, struct mparse *parse,
1.316 ! schwarze 822: const char *os_s, int quick)
1.265 schwarze 823: {
824: struct roff_man *man;
825:
826: man = mandoc_calloc(1, sizeof(*man));
827: man->parse = parse;
828: man->roff = roff;
1.316 ! schwarze 829: man->os_s = os_s;
1.265 schwarze 830: man->quick = quick;
831: roff_man_alloc1(man);
1.296 schwarze 832: roff->man = man;
1.277 schwarze 833: return man;
1.67 kristaps 834: }
835:
1.266 schwarze 836: /* --- syntax tree handling ----------------------------------------------- */
837:
838: struct roff_node *
839: roff_node_alloc(struct roff_man *man, int line, int pos,
840: enum roff_type type, int tok)
841: {
842: struct roff_node *n;
843:
844: n = mandoc_calloc(1, sizeof(*n));
845: n->line = line;
846: n->pos = pos;
847: n->tok = tok;
848: n->type = type;
849: n->sec = man->lastsec;
850:
851: if (man->flags & MDOC_SYNOPSIS)
1.285 schwarze 852: n->flags |= NODE_SYNPRETTY;
1.266 schwarze 853: else
1.285 schwarze 854: n->flags &= ~NODE_SYNPRETTY;
1.266 schwarze 855: if (man->flags & MDOC_NEWLINE)
1.285 schwarze 856: n->flags |= NODE_LINE;
1.266 schwarze 857: man->flags &= ~MDOC_NEWLINE;
858:
1.277 schwarze 859: return n;
1.266 schwarze 860: }
861:
862: void
863: roff_node_append(struct roff_man *man, struct roff_node *n)
864: {
865:
866: switch (man->next) {
867: case ROFF_NEXT_SIBLING:
1.281 schwarze 868: if (man->last->next != NULL) {
869: n->next = man->last->next;
870: man->last->next->prev = n;
871: } else
872: man->last->parent->last = n;
1.266 schwarze 873: man->last->next = n;
874: n->prev = man->last;
875: n->parent = man->last->parent;
876: break;
877: case ROFF_NEXT_CHILD:
1.287 schwarze 878: if (man->last->child != NULL) {
879: n->next = man->last->child;
880: man->last->child->prev = n;
881: } else
882: man->last->last = n;
1.266 schwarze 883: man->last->child = n;
884: n->parent = man->last;
885: break;
886: default:
887: abort();
888: }
1.282 schwarze 889: man->last = n;
1.266 schwarze 890:
891: switch (n->type) {
892: case ROFFT_HEAD:
893: n->parent->head = n;
894: break;
895: case ROFFT_BODY:
1.282 schwarze 896: if (n->end != ENDBODY_NOT)
897: return;
1.266 schwarze 898: n->parent->body = n;
899: break;
900: case ROFFT_TAIL:
901: n->parent->tail = n;
902: break;
903: default:
1.282 schwarze 904: return;
1.266 schwarze 905: }
1.282 schwarze 906:
907: /*
908: * Copy over the normalised-data pointer of our parent. Not
909: * everybody has one, but copying a null pointer is fine.
910: */
911:
912: n->norm = n->parent->norm;
913: assert(n->parent->type == ROFFT_BLOCK);
1.266 schwarze 914: }
915:
1.267 schwarze 916: void
917: roff_word_alloc(struct roff_man *man, int line, int pos, const char *word)
918: {
919: struct roff_node *n;
920:
921: n = roff_node_alloc(man, line, pos, ROFFT_TEXT, TOKEN_NONE);
922: n->string = roff_strdup(man->roff, word);
923: roff_node_append(man, n);
1.286 schwarze 924: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 925: man->next = ROFF_NEXT_SIBLING;
926: }
927:
928: void
929: roff_word_append(struct roff_man *man, const char *word)
930: {
931: struct roff_node *n;
932: char *addstr, *newstr;
933:
934: n = man->last;
935: addstr = roff_strdup(man->roff, word);
936: mandoc_asprintf(&newstr, "%s %s", n->string, addstr);
937: free(addstr);
938: free(n->string);
939: n->string = newstr;
940: man->next = ROFF_NEXT_SIBLING;
1.268 schwarze 941: }
942:
943: void
944: roff_elem_alloc(struct roff_man *man, int line, int pos, int tok)
945: {
946: struct roff_node *n;
947:
948: n = roff_node_alloc(man, line, pos, ROFFT_ELEM, tok);
949: roff_node_append(man, n);
950: man->next = ROFF_NEXT_CHILD;
951: }
952:
953: struct roff_node *
954: roff_block_alloc(struct roff_man *man, int line, int pos, int tok)
955: {
956: struct roff_node *n;
957:
958: n = roff_node_alloc(man, line, pos, ROFFT_BLOCK, tok);
959: roff_node_append(man, n);
960: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 961: return n;
1.267 schwarze 962: }
963:
1.266 schwarze 964: struct roff_node *
965: roff_head_alloc(struct roff_man *man, int line, int pos, int tok)
966: {
967: struct roff_node *n;
968:
969: n = roff_node_alloc(man, line, pos, ROFFT_HEAD, tok);
970: roff_node_append(man, n);
971: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 972: return n;
1.266 schwarze 973: }
974:
975: struct roff_node *
976: roff_body_alloc(struct roff_man *man, int line, int pos, int tok)
977: {
978: struct roff_node *n;
979:
980: n = roff_node_alloc(man, line, pos, ROFFT_BODY, tok);
981: roff_node_append(man, n);
982: man->next = ROFF_NEXT_CHILD;
1.277 schwarze 983: return n;
1.267 schwarze 984: }
985:
986: void
987: roff_addeqn(struct roff_man *man, const struct eqn *eqn)
988: {
989: struct roff_node *n;
990:
991: n = roff_node_alloc(man, eqn->ln, eqn->pos, ROFFT_EQN, TOKEN_NONE);
992: n->eqn = eqn;
993: if (eqn->ln > man->last->line)
1.285 schwarze 994: n->flags |= NODE_LINE;
1.267 schwarze 995: roff_node_append(man, n);
996: man->next = ROFF_NEXT_SIBLING;
997: }
998:
999: void
1000: roff_addtbl(struct roff_man *man, const struct tbl_span *tbl)
1001: {
1002: struct roff_node *n;
1003:
1004: if (man->macroset == MACROSET_MAN)
1.302 schwarze 1005: man_breakscope(man, ROFF_TS);
1.267 schwarze 1006: n = roff_node_alloc(man, tbl->line, 0, ROFFT_TBL, TOKEN_NONE);
1007: n->span = tbl;
1008: roff_node_append(man, n);
1.286 schwarze 1009: n->flags |= NODE_VALID | NODE_ENDED;
1.267 schwarze 1010: man->next = ROFF_NEXT_SIBLING;
1.266 schwarze 1011: }
1012:
1013: void
1014: roff_node_unlink(struct roff_man *man, struct roff_node *n)
1015: {
1016:
1017: /* Adjust siblings. */
1018:
1019: if (n->prev)
1020: n->prev->next = n->next;
1021: if (n->next)
1022: n->next->prev = n->prev;
1023:
1024: /* Adjust parent. */
1025:
1026: if (n->parent != NULL) {
1027: if (n->parent->child == n)
1028: n->parent->child = n->next;
1029: if (n->parent->last == n)
1030: n->parent->last = n->prev;
1031: }
1032:
1033: /* Adjust parse point. */
1034:
1035: if (man == NULL)
1036: return;
1037: if (man->last == n) {
1038: if (n->prev == NULL) {
1039: man->last = n->parent;
1040: man->next = ROFF_NEXT_CHILD;
1041: } else {
1042: man->last = n->prev;
1043: man->next = ROFF_NEXT_SIBLING;
1044: }
1045: }
1046: if (man->first == n)
1047: man->first = NULL;
1048: }
1049:
1050: void
1051: roff_node_free(struct roff_node *n)
1052: {
1053:
1054: if (n->args != NULL)
1055: mdoc_argv_free(n->args);
1056: if (n->type == ROFFT_BLOCK || n->type == ROFFT_ELEM)
1057: free(n->norm);
1058: free(n->string);
1059: free(n);
1060: }
1061:
1062: void
1063: roff_node_delete(struct roff_man *man, struct roff_node *n)
1064: {
1065:
1066: while (n->child != NULL)
1067: roff_node_delete(man, n->child);
1068: roff_node_unlink(man, n);
1069: roff_node_free(n);
1.269 schwarze 1070: }
1071:
1072: void
1073: deroff(char **dest, const struct roff_node *n)
1074: {
1075: char *cp;
1076: size_t sz;
1077:
1078: if (n->type != ROFFT_TEXT) {
1079: for (n = n->child; n != NULL; n = n->next)
1080: deroff(dest, n);
1081: return;
1082: }
1083:
1.288 schwarze 1084: /* Skip leading whitespace. */
1.269 schwarze 1085:
1.288 schwarze 1086: for (cp = n->string; *cp != '\0'; cp++) {
1.289 schwarze 1087: if (cp[0] == '\\' && cp[1] != '\0' &&
1088: strchr(" %&0^|~", cp[1]) != NULL)
1.269 schwarze 1089: cp++;
1.288 schwarze 1090: else if ( ! isspace((unsigned char)*cp))
1.269 schwarze 1091: break;
1092: }
1093:
1.289 schwarze 1094: /* Skip trailing backslash. */
1095:
1096: sz = strlen(cp);
1.290 schwarze 1097: if (sz > 0 && cp[sz - 1] == '\\')
1.289 schwarze 1098: sz--;
1099:
1.269 schwarze 1100: /* Skip trailing whitespace. */
1101:
1.289 schwarze 1102: for (; sz; sz--)
1.269 schwarze 1103: if ( ! isspace((unsigned char)cp[sz-1]))
1104: break;
1105:
1106: /* Skip empty strings. */
1107:
1108: if (sz == 0)
1109: return;
1110:
1111: if (*dest == NULL) {
1112: *dest = mandoc_strndup(cp, sz);
1113: return;
1114: }
1115:
1116: mandoc_asprintf(&cp, "%s %*s", *dest, (int)sz, cp);
1117: free(*dest);
1118: *dest = cp;
1.266 schwarze 1119: }
1120:
1121: /* --- main functions of the roff parser ---------------------------------- */
1122:
1.94 kristaps 1123: /*
1.206 schwarze 1124: * In the current line, expand escape sequences that tend to get
1125: * used in numerical expressions and conditional requests.
1126: * Also check the syntax of the remaining escape sequences.
1.154 kristaps 1127: */
1.172 schwarze 1128: static enum rofferr
1.238 schwarze 1129: roff_res(struct roff *r, struct buf *buf, int ln, int pos)
1.94 kristaps 1130: {
1.208 schwarze 1131: char ubuf[24]; /* buffer to print the number */
1.205 schwarze 1132: const char *start; /* start of the string to process */
1.209 schwarze 1133: char *stesc; /* start of an escape sequence ('\\') */
1.108 schwarze 1134: const char *stnam; /* start of the name, after "[(*" */
1135: const char *cp; /* end of the name, e.g. before ']' */
1136: const char *res; /* the string to be substituted */
1.238 schwarze 1137: char *nbuf; /* new buffer to copy buf->buf to */
1.181 schwarze 1138: size_t maxl; /* expected length of the escape name */
1139: size_t naml; /* actual length of the escape name */
1.237 schwarze 1140: enum mandoc_esc esc; /* type of the escape sequence */
1.316 ! schwarze 1141: enum mandoc_os os_e; /* kind of RCS id seen */
1.237 schwarze 1142: int inaml; /* length returned from mandoc_escape() */
1.181 schwarze 1143: int expand_count; /* to avoid infinite loops */
1.206 schwarze 1144: int npos; /* position in numeric expression */
1.218 schwarze 1145: int arg_complete; /* argument not interrupted by eol */
1.303 schwarze 1146: int done; /* no more input available */
1.315 schwarze 1147: int deftype; /* type of definition to paste */
1.206 schwarze 1148: char term; /* character terminating the escape */
1.94 kristaps 1149:
1.303 schwarze 1150: /* Search forward for comments. */
1151:
1152: done = 0;
1153: start = buf->buf + pos;
1154: for (stesc = buf->buf + pos; *stesc != '\0'; stesc++) {
1155: if (stesc[0] != r->escape || stesc[1] == '\0')
1156: continue;
1157: stesc++;
1158: if (*stesc != '"' && *stesc != '#')
1159: continue;
1.313 schwarze 1160:
1161: /* Comment found, look for RCS id. */
1162:
1163: if ((cp = strstr(stesc, "$" "OpenBSD")) != NULL) {
1.316 ! schwarze 1164: os_e = MANDOC_OS_OPENBSD;
1.313 schwarze 1165: cp += 8;
1166: } else if ((cp = strstr(stesc, "$" "NetBSD")) != NULL) {
1.316 ! schwarze 1167: os_e = MANDOC_OS_NETBSD;
1.313 schwarze 1168: cp += 7;
1169: }
1170: if (cp != NULL &&
1171: isalnum((unsigned char)*cp) == 0 &&
1.314 schwarze 1172: strchr(cp, '$') != NULL) {
1173: if (r->man->meta.rcsids & (1 << os_e))
1174: mandoc_msg(MANDOCERR_RCS_REP, r->parse,
1175: ln, stesc + 1 - buf->buf, stesc + 1);
1.313 schwarze 1176: r->man->meta.rcsids |= 1 << os_e;
1.314 schwarze 1177: }
1.313 schwarze 1178:
1179: /* Handle trailing whitespace. */
1180:
1.303 schwarze 1181: cp = strchr(stesc--, '\0') - 1;
1182: if (*cp == '\n') {
1183: done = 1;
1184: cp--;
1185: }
1186: if (*cp == ' ' || *cp == '\t')
1187: mandoc_msg(MANDOCERR_SPACE_EOL, r->parse,
1188: ln, cp - buf->buf, NULL);
1189: while (stesc > start && stesc[-1] == ' ')
1190: stesc--;
1191: *stesc = '\0';
1192: break;
1193: }
1194: if (stesc == start)
1195: return ROFF_CONT;
1196: stesc--;
1197:
1198: /* Notice the end of the input. */
1199:
1200: if (*stesc == '\n') {
1201: *stesc-- = '\0';
1202: done = 1;
1203: }
1204:
1.170 schwarze 1205: expand_count = 0;
1.303 schwarze 1206: while (stesc >= start) {
1.170 schwarze 1207:
1.205 schwarze 1208: /* Search backwards for the next backslash. */
1209:
1.303 schwarze 1210: if (*stesc != r->escape) {
1211: if (*stesc == '\\') {
1212: *stesc = '\0';
1213: buf->sz = mandoc_asprintf(&nbuf, "%s\\e%s",
1214: buf->buf, stesc + 1) + 1;
1215: start = nbuf + pos;
1216: stesc = nbuf + (stesc - buf->buf);
1217: free(buf->buf);
1218: buf->buf = nbuf;
1219: }
1220: stesc--;
1.205 schwarze 1221: continue;
1.303 schwarze 1222: }
1.205 schwarze 1223:
1224: /* If it is escaped, skip it. */
1225:
1226: for (cp = stesc - 1; cp >= start; cp--)
1.303 schwarze 1227: if (*cp != r->escape)
1.205 schwarze 1228: break;
1229:
1.238 schwarze 1230: if ((stesc - cp) % 2 == 0) {
1.303 schwarze 1231: while (stesc > cp)
1232: *stesc-- = '\\';
1.205 schwarze 1233: continue;
1.303 schwarze 1234: } else if (stesc[1] != '\0') {
1235: *stesc = '\\';
1236: } else {
1237: *stesc-- = '\0';
1238: if (done)
1239: continue;
1240: else
1241: return ROFF_APPEND;
1.205 schwarze 1242: }
1.108 schwarze 1243:
1.206 schwarze 1244: /* Decide whether to expand or to check only. */
1.108 schwarze 1245:
1.206 schwarze 1246: term = '\0';
1.205 schwarze 1247: cp = stesc + 1;
1.181 schwarze 1248: switch (*cp) {
1.207 schwarze 1249: case '*':
1.181 schwarze 1250: res = NULL;
1251: break;
1.207 schwarze 1252: case 'B':
1253: case 'w':
1.206 schwarze 1254: term = cp[1];
1255: /* FALLTHROUGH */
1.207 schwarze 1256: case 'n':
1.181 schwarze 1257: res = ubuf;
1258: break;
1259: default:
1.237 schwarze 1260: esc = mandoc_escape(&cp, &stnam, &inaml);
1261: if (esc == ESCAPE_ERROR ||
1262: (esc == ESCAPE_SPECIAL &&
1.279 schwarze 1263: mchars_spec2cp(stnam, inaml) < 0))
1.219 schwarze 1264: mandoc_vmsg(MANDOCERR_ESC_BAD,
1.238 schwarze 1265: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1266: "%.*s", (int)(cp - stesc), stesc);
1.303 schwarze 1267: stesc--;
1.205 schwarze 1268: continue;
1.152 kristaps 1269: }
1270:
1.205 schwarze 1271: if (EXPAND_LIMIT < ++expand_count) {
1272: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1.238 schwarze 1273: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1274: return ROFF_IGN;
1.205 schwarze 1275: }
1.108 schwarze 1276:
1277: /*
1278: * The third character decides the length
1.181 schwarze 1279: * of the name of the string or register.
1.108 schwarze 1280: * Save a pointer to the name.
1281: */
1282:
1.238 schwarze 1283: if (term == '\0') {
1.206 schwarze 1284: switch (*++cp) {
1.207 schwarze 1285: case '\0':
1.206 schwarze 1286: maxl = 0;
1287: break;
1.207 schwarze 1288: case '(':
1.206 schwarze 1289: cp++;
1290: maxl = 2;
1291: break;
1.207 schwarze 1292: case '[':
1.206 schwarze 1293: cp++;
1294: term = ']';
1295: maxl = 0;
1296: break;
1297: default:
1298: maxl = 1;
1299: break;
1300: }
1301: } else {
1302: cp += 2;
1.94 kristaps 1303: maxl = 0;
1304: }
1.108 schwarze 1305: stnam = cp;
1.94 kristaps 1306:
1.108 schwarze 1307: /* Advance to the end of the name. */
1.94 kristaps 1308:
1.253 schwarze 1309: naml = 0;
1.218 schwarze 1310: arg_complete = 1;
1.253 schwarze 1311: while (maxl == 0 || naml < maxl) {
1.238 schwarze 1312: if (*cp == '\0') {
1.219 schwarze 1313: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 1314: ln, (int)(stesc - buf->buf), stesc);
1.218 schwarze 1315: arg_complete = 0;
1.206 schwarze 1316: break;
1.153 kristaps 1317: }
1.238 schwarze 1318: if (maxl == 0 && *cp == term) {
1.206 schwarze 1319: cp++;
1.253 schwarze 1320: break;
1321: }
1322: if (*cp++ != '\\' || stesc[1] != 'w') {
1323: naml++;
1324: continue;
1325: }
1326: switch (mandoc_escape(&cp, NULL, NULL)) {
1327: case ESCAPE_SPECIAL:
1328: case ESCAPE_UNICODE:
1329: case ESCAPE_NUMBERED:
1330: case ESCAPE_OVERSTRIKE:
1331: naml++;
1332: break;
1333: default:
1.94 kristaps 1334: break;
1.206 schwarze 1335: }
1.94 kristaps 1336: }
1337:
1.108 schwarze 1338: /*
1339: * Retrieve the replacement string; if it is
1340: * undefined, resume searching for escapes.
1341: */
1342:
1.206 schwarze 1343: switch (stesc[1]) {
1.207 schwarze 1344: case '*':
1.315 schwarze 1345: if (arg_complete) {
1346: deftype = ROFFDEF_USER | ROFFDEF_PRE;
1347: res = roff_getstrn(r, stnam, naml, &deftype);
1348: }
1.206 schwarze 1349: break;
1.207 schwarze 1350: case 'B':
1.206 schwarze 1351: npos = 0;
1.218 schwarze 1352: ubuf[0] = arg_complete &&
1.261 schwarze 1353: roff_evalnum(r, ln, stnam, &npos,
1354: NULL, ROFFNUM_SCALE) &&
1.218 schwarze 1355: stnam + npos + 1 == cp ? '1' : '0';
1.206 schwarze 1356: ubuf[1] = '\0';
1357: break;
1.207 schwarze 1358: case 'n':
1.218 schwarze 1359: if (arg_complete)
1360: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1361: roff_getregn(r, stnam, naml));
1362: else
1363: ubuf[0] = '\0';
1.206 schwarze 1364: break;
1.207 schwarze 1365: case 'w':
1.218 schwarze 1366: /* use even incomplete args */
1.208 schwarze 1367: (void)snprintf(ubuf, sizeof(ubuf), "%d",
1.206 schwarze 1368: 24 * (int)naml);
1369: break;
1370: }
1.94 kristaps 1371:
1.238 schwarze 1372: if (res == NULL) {
1.219 schwarze 1373: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1374: r->parse, ln, (int)(stesc - buf->buf),
1.219 schwarze 1375: "%.*s", (int)naml, stnam);
1.142 kristaps 1376: res = "";
1.246 schwarze 1377: } else if (buf->sz + strlen(res) > SHRT_MAX) {
1378: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
1379: ln, (int)(stesc - buf->buf), NULL);
1.277 schwarze 1380: return ROFF_IGN;
1.94 kristaps 1381: }
1382:
1.108 schwarze 1383: /* Replace the escape sequence by the string. */
1384:
1.209 schwarze 1385: *stesc = '\0';
1.238 schwarze 1386: buf->sz = mandoc_asprintf(&nbuf, "%s%s%s",
1387: buf->buf, res, cp) + 1;
1.94 kristaps 1388:
1.205 schwarze 1389: /* Prepare for the next replacement. */
1.94 kristaps 1390:
1.205 schwarze 1391: start = nbuf + pos;
1.238 schwarze 1392: stesc = nbuf + (stesc - buf->buf) + strlen(res);
1393: free(buf->buf);
1394: buf->buf = nbuf;
1.154 kristaps 1395: }
1.277 schwarze 1396: return ROFF_CONT;
1.154 kristaps 1397: }
1398:
1399: /*
1.275 schwarze 1400: * Process text streams.
1.154 kristaps 1401: */
1402: static enum rofferr
1.305 schwarze 1403: roff_parsetext(struct roff *r, struct buf *buf, int pos, int *offs)
1.154 kristaps 1404: {
1405: size_t sz;
1406: const char *start;
1.178 schwarze 1407: char *p;
1408: int isz;
1.154 kristaps 1409: enum mandoc_esc esc;
1410:
1.275 schwarze 1411: /* Spring the input line trap. */
1412:
1413: if (roffit_lines == 1) {
1414: isz = mandoc_asprintf(&p, "%s\n.%s", buf->buf, roffit_macro);
1415: free(buf->buf);
1416: buf->buf = p;
1417: buf->sz = isz + 1;
1418: *offs = 0;
1419: free(roffit_macro);
1420: roffit_lines = 0;
1.277 schwarze 1421: return ROFF_REPARSE;
1.275 schwarze 1422: } else if (roffit_lines > 1)
1423: --roffit_lines;
1424:
1.305 schwarze 1425: if (roffce_node != NULL && buf->buf[pos] != '\0') {
1426: if (roffce_lines < 1) {
1427: r->man->last = roffce_node;
1428: r->man->next = ROFF_NEXT_SIBLING;
1429: roffce_lines = 0;
1430: roffce_node = NULL;
1431: } else
1432: roffce_lines--;
1433: }
1434:
1.275 schwarze 1435: /* Convert all breakable hyphens into ASCII_HYPH. */
1436:
1.238 schwarze 1437: start = p = buf->buf + pos;
1.154 kristaps 1438:
1.238 schwarze 1439: while (*p != '\0') {
1.154 kristaps 1440: sz = strcspn(p, "-\\");
1441: p += sz;
1442:
1.238 schwarze 1443: if (*p == '\0')
1.159 kristaps 1444: break;
1445:
1.238 schwarze 1446: if (*p == '\\') {
1.154 kristaps 1447: /* Skip over escapes. */
1448: p++;
1.189 schwarze 1449: esc = mandoc_escape((const char **)&p, NULL, NULL);
1.238 schwarze 1450: if (esc == ESCAPE_ERROR)
1.154 kristaps 1451: break;
1.264 schwarze 1452: while (*p == '-')
1453: p++;
1.155 kristaps 1454: continue;
1.159 kristaps 1455: } else if (p == start) {
1.158 kristaps 1456: p++;
1.155 kristaps 1457: continue;
1.158 kristaps 1458: }
1.155 kristaps 1459:
1.171 schwarze 1460: if (isalpha((unsigned char)p[-1]) &&
1461: isalpha((unsigned char)p[1]))
1.155 kristaps 1462: *p = ASCII_HYPH;
1463: p++;
1.94 kristaps 1464: }
1.277 schwarze 1465: return ROFF_CONT;
1.94 kristaps 1466: }
1467:
1.67 kristaps 1468: enum rofferr
1.238 schwarze 1469: roff_parseln(struct roff *r, int ln, struct buf *buf, int *offs)
1.67 kristaps 1470: {
1.294 schwarze 1471: enum roff_tok t;
1.109 kristaps 1472: enum rofferr e;
1.238 schwarze 1473: int pos; /* parse point */
1.243 schwarze 1474: int spos; /* saved parse point for messages */
1.238 schwarze 1475: int ppos; /* original offset in buf->buf */
1476: int ctl; /* macro line (boolean) */
1477:
1478: ppos = pos = *offs;
1.79 kristaps 1479:
1.230 schwarze 1480: /* Handle in-line equation delimiters. */
1481:
1.236 schwarze 1482: if (r->tbl == NULL &&
1483: r->last_eqn != NULL && r->last_eqn->delim &&
1.230 schwarze 1484: (r->eqn == NULL || r->eqn_inline)) {
1.238 schwarze 1485: e = roff_eqndelim(r, buf, pos);
1.230 schwarze 1486: if (e == ROFF_REPARSE)
1.277 schwarze 1487: return e;
1.230 schwarze 1488: assert(e == ROFF_CONT);
1489: }
1490:
1491: /* Expand some escape sequences. */
1.94 kristaps 1492:
1.238 schwarze 1493: e = roff_res(r, buf, ln, pos);
1.303 schwarze 1494: if (e == ROFF_IGN || e == ROFF_APPEND)
1.277 schwarze 1495: return e;
1.238 schwarze 1496: assert(e == ROFF_CONT);
1.94 kristaps 1497:
1.238 schwarze 1498: ctl = roff_getcontrol(r, buf->buf, &pos);
1.130 kristaps 1499:
1.94 kristaps 1500: /*
1.79 kristaps 1501: * First, if a scope is open and we're not a macro, pass the
1.252 schwarze 1502: * text through the macro's filter.
1503: * Equations process all content themselves.
1504: * Tables process almost all content themselves, but we want
1505: * to warn about macros before passing it there.
1.79 kristaps 1506: */
1.74 kristaps 1507:
1.252 schwarze 1508: if (r->last != NULL && ! ctl) {
1.78 kristaps 1509: t = r->last->tok;
1.238 schwarze 1510: e = (*roffs[t].text)(r, t, buf, ln, pos, pos, offs);
1.294 schwarze 1511: if (e == ROFF_IGN)
1.277 schwarze 1512: return e;
1.294 schwarze 1513: assert(e == ROFF_CONT);
1.182 schwarze 1514: }
1.252 schwarze 1515: if (r->eqn != NULL)
1.277 schwarze 1516: return eqn_read(&r->eqn, ln, buf->buf, ppos, offs);
1.252 schwarze 1517: if (r->tbl != NULL && ( ! ctl || buf->buf[pos] == '\0'))
1.277 schwarze 1518: return tbl_read(r->tbl, ln, buf->buf, ppos);
1.252 schwarze 1519: if ( ! ctl)
1.305 schwarze 1520: return roff_parsetext(r, buf, pos, offs);
1.228 schwarze 1521:
1522: /* Skip empty request lines. */
1523:
1.238 schwarze 1524: if (buf->buf[pos] == '"') {
1.228 schwarze 1525: mandoc_msg(MANDOCERR_COMMENT_BAD, r->parse,
1526: ln, pos, NULL);
1.277 schwarze 1527: return ROFF_IGN;
1.238 schwarze 1528: } else if (buf->buf[pos] == '\0')
1.277 schwarze 1529: return ROFF_IGN;
1.67 kristaps 1530:
1.79 kristaps 1531: /*
1532: * If a scope is open, go to the child handler for that macro,
1533: * as it may want to preprocess before doing anything with it.
1.125 kristaps 1534: * Don't do so if an equation is open.
1.79 kristaps 1535: */
1.78 kristaps 1536:
1.79 kristaps 1537: if (r->last) {
1538: t = r->last->tok;
1.277 schwarze 1539: return (*roffs[t].sub)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1540: }
1.78 kristaps 1541:
1.243 schwarze 1542: /* No scope is open. This is a new request or macro. */
1543:
1544: spos = pos;
1545: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1546:
1547: /* Tables ignore most macros. */
1548:
1.308 schwarze 1549: if (r->tbl != NULL && (t == TOKEN_NONE || t == ROFF_TS ||
1.309 schwarze 1550: t == ROFF_br || t == ROFF_ce || t == ROFF_rj || t == ROFF_sp)) {
1.243 schwarze 1551: mandoc_msg(MANDOCERR_TBLMACRO, r->parse,
1552: ln, pos, buf->buf + spos);
1.308 schwarze 1553: if (t != TOKEN_NONE)
1.277 schwarze 1554: return ROFF_IGN;
1.257 schwarze 1555: while (buf->buf[pos] != '\0' && buf->buf[pos] != ' ')
1556: pos++;
1.291 schwarze 1557: while (buf->buf[pos] == ' ')
1.257 schwarze 1558: pos++;
1.277 schwarze 1559: return tbl_read(r->tbl, ln, buf->buf, pos);
1.243 schwarze 1560: }
1561:
1.305 schwarze 1562: /* For now, let high level macros abort .ce mode. */
1563:
1564: if (ctl && roffce_node != NULL &&
1565: (t == TOKEN_NONE || t == ROFF_EQ || t == ROFF_TS)) {
1566: r->man->last = roffce_node;
1567: r->man->next = ROFF_NEXT_SIBLING;
1568: roffce_lines = 0;
1569: roffce_node = NULL;
1570: }
1571:
1.79 kristaps 1572: /*
1.243 schwarze 1573: * This is neither a roff request nor a user-defined macro.
1574: * Let the standard macro set parsers handle it.
1.79 kristaps 1575: */
1.67 kristaps 1576:
1.294 schwarze 1577: if (t == TOKEN_NONE)
1.277 schwarze 1578: return ROFF_CONT;
1.243 schwarze 1579:
1580: /* Execute a roff request or a user defined macro. */
1.67 kristaps 1581:
1.296 schwarze 1582: return (*roffs[t].proc)(r, t, buf, ln, spos, pos, offs);
1.74 kristaps 1583: }
1584:
1.117 kristaps 1585: void
1.74 kristaps 1586: roff_endparse(struct roff *r)
1587: {
1588:
1.110 kristaps 1589: if (r->last)
1.221 schwarze 1590: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1591: r->last->line, r->last->col,
1.295 schwarze 1592: roff_name[r->last->tok]);
1.117 kristaps 1593:
1.125 kristaps 1594: if (r->eqn) {
1.221 schwarze 1595: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1596: r->eqn->eqn.ln, r->eqn->eqn.pos, "EQ");
1.151 kristaps 1597: eqn_end(&r->eqn);
1.125 kristaps 1598: }
1599:
1.117 kristaps 1600: if (r->tbl) {
1.221 schwarze 1601: mandoc_msg(MANDOCERR_BLK_NOEND, r->parse,
1602: r->tbl->line, r->tbl->pos, "TS");
1.151 kristaps 1603: tbl_end(&r->tbl);
1.117 kristaps 1604: }
1.67 kristaps 1605: }
1606:
1607: /*
1608: * Parse a roff node's type from the input buffer. This must be in the
1609: * form of ".foo xxx" in the usual way.
1610: */
1.294 schwarze 1611: static enum roff_tok
1.214 schwarze 1612: roff_parse(struct roff *r, char *buf, int *pos, int ln, int ppos)
1.67 kristaps 1613: {
1.214 schwarze 1614: char *cp;
1.106 kristaps 1615: const char *mac;
1616: size_t maclen;
1.315 schwarze 1617: int deftype;
1.294 schwarze 1618: enum roff_tok t;
1.67 kristaps 1619:
1.214 schwarze 1620: cp = buf + *pos;
1621:
1622: if ('\0' == *cp || '"' == *cp || '\t' == *cp || ' ' == *cp)
1.294 schwarze 1623: return TOKEN_NONE;
1.67 kristaps 1624:
1.214 schwarze 1625: mac = cp;
1626: maclen = roff_getname(r, &cp, ln, ppos);
1.67 kristaps 1627:
1.315 schwarze 1628: deftype = ROFFDEF_USER | ROFFDEF_REN;
1629: r->current_string = roff_getstrn(r, mac, maclen, &deftype);
1630: switch (deftype) {
1631: case ROFFDEF_USER:
1632: t = ROFF_USERDEF;
1633: break;
1634: case ROFFDEF_REN:
1635: t = ROFF_RENAMED;
1636: break;
1637: default:
1638: t = roffhash_find(r->reqtab, mac, maclen);
1639: break;
1640: }
1.294 schwarze 1641: if (t != TOKEN_NONE)
1.214 schwarze 1642: *pos = cp - buf;
1.277 schwarze 1643: return t;
1.67 kristaps 1644: }
1645:
1.266 schwarze 1646: /* --- handling of request blocks ----------------------------------------- */
1647:
1.67 kristaps 1648: static enum rofferr
1.76 kristaps 1649: roff_cblock(ROFF_ARGS)
1.67 kristaps 1650: {
1651:
1.79 kristaps 1652: /*
1653: * A block-close `..' should only be invoked as a child of an
1654: * ignore macro, otherwise raise a warning and just ignore it.
1655: */
1656:
1.238 schwarze 1657: if (r->last == NULL) {
1.221 schwarze 1658: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1659: ln, ppos, "..");
1.277 schwarze 1660: return ROFF_IGN;
1.76 kristaps 1661: }
1.67 kristaps 1662:
1.81 kristaps 1663: switch (r->last->tok) {
1.207 schwarze 1664: case ROFF_am:
1.220 schwarze 1665: /* ROFF_am1 is remapped to ROFF_am in roff_block(). */
1.207 schwarze 1666: case ROFF_ami:
1667: case ROFF_de:
1.108 schwarze 1668: /* ROFF_de1 is remapped to ROFF_de in roff_block(). */
1.207 schwarze 1669: case ROFF_dei:
1670: case ROFF_ig:
1.81 kristaps 1671: break;
1672: default:
1.221 schwarze 1673: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1674: ln, ppos, "..");
1.277 schwarze 1675: return ROFF_IGN;
1.76 kristaps 1676: }
1.67 kristaps 1677:
1.238 schwarze 1678: if (buf->buf[pos] != '\0')
1.217 schwarze 1679: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 1680: ".. %s", buf->buf + pos);
1.71 kristaps 1681:
1682: roffnode_pop(r);
1.76 kristaps 1683: roffnode_cleanscope(r);
1.277 schwarze 1684: return ROFF_IGN;
1.71 kristaps 1685:
1.67 kristaps 1686: }
1687:
1.76 kristaps 1688: static void
1689: roffnode_cleanscope(struct roff *r)
1.67 kristaps 1690: {
1691:
1.76 kristaps 1692: while (r->last) {
1.173 schwarze 1693: if (--r->last->endspan != 0)
1.76 kristaps 1694: break;
1695: roffnode_pop(r);
1696: }
1.67 kristaps 1697: }
1698:
1.195 schwarze 1699: static void
1700: roff_ccond(struct roff *r, int ln, int ppos)
1.74 kristaps 1701: {
1702:
1.76 kristaps 1703: if (NULL == r->last) {
1.221 schwarze 1704: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1705: ln, ppos, "\\}");
1.195 schwarze 1706: return;
1.76 kristaps 1707: }
1708:
1.82 kristaps 1709: switch (r->last->tok) {
1.207 schwarze 1710: case ROFF_el:
1711: case ROFF_ie:
1712: case ROFF_if:
1.82 kristaps 1713: break;
1714: default:
1.221 schwarze 1715: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1716: ln, ppos, "\\}");
1.195 schwarze 1717: return;
1.75 kristaps 1718: }
1719:
1.76 kristaps 1720: if (r->last->endspan > -1) {
1.221 schwarze 1721: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
1722: ln, ppos, "\\}");
1.195 schwarze 1723: return;
1.76 kristaps 1724: }
1725:
1.75 kristaps 1726: roffnode_pop(r);
1.76 kristaps 1727: roffnode_cleanscope(r);
1.195 schwarze 1728: return;
1.76 kristaps 1729: }
1730:
1731: static enum rofferr
1.80 kristaps 1732: roff_block(ROFF_ARGS)
1.76 kristaps 1733: {
1.315 schwarze 1734: const char *name, *value;
1735: char *call, *cp, *iname, *rname;
1736: size_t csz, namesz, rsz;
1737: int deftype;
1.106 kristaps 1738:
1.220 schwarze 1739: /* Ignore groff compatibility mode for now. */
1.76 kristaps 1740:
1.238 schwarze 1741: if (tok == ROFF_de1)
1.220 schwarze 1742: tok = ROFF_de;
1.251 schwarze 1743: else if (tok == ROFF_dei1)
1744: tok = ROFF_dei;
1.238 schwarze 1745: else if (tok == ROFF_am1)
1.220 schwarze 1746: tok = ROFF_am;
1.251 schwarze 1747: else if (tok == ROFF_ami1)
1748: tok = ROFF_ami;
1.220 schwarze 1749:
1750: /* Parse the macro name argument. */
1751:
1.238 schwarze 1752: cp = buf->buf + pos;
1753: if (tok == ROFF_ig) {
1.220 schwarze 1754: iname = NULL;
1755: namesz = 0;
1756: } else {
1757: iname = cp;
1758: namesz = roff_getname(r, &cp, ln, ppos);
1759: iname[namesz] = '\0';
1760: }
1.107 kristaps 1761:
1.220 schwarze 1762: /* Resolve the macro name argument if it is indirect. */
1.107 kristaps 1763:
1.238 schwarze 1764: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1765: deftype = ROFFDEF_USER;
1766: name = roff_getstrn(r, iname, namesz, &deftype);
1767: if (name == NULL) {
1.220 schwarze 1768: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1769: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1770: "%.*s", (int)namesz, iname);
1771: namesz = 0;
1772: } else
1773: namesz = strlen(name);
1774: } else
1775: name = iname;
1.107 kristaps 1776:
1.238 schwarze 1777: if (namesz == 0 && tok != ROFF_ig) {
1.220 schwarze 1778: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse,
1.295 schwarze 1779: ln, ppos, roff_name[tok]);
1.277 schwarze 1780: return ROFF_IGN;
1.220 schwarze 1781: }
1.80 kristaps 1782:
1.106 kristaps 1783: roffnode_push(r, tok, name, ln, ppos);
1784:
1785: /*
1786: * At the beginning of a `de' macro, clear the existing string
1787: * with the same name, if there is one. New content will be
1.193 schwarze 1788: * appended from roff_block_text() in multiline mode.
1.106 kristaps 1789: */
1.107 kristaps 1790:
1.311 schwarze 1791: if (tok == ROFF_de || tok == ROFF_dei) {
1.213 schwarze 1792: roff_setstrn(&r->strtab, name, namesz, "", 0, 0);
1.311 schwarze 1793: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.315 schwarze 1794: } else if (tok == ROFF_am || tok == ROFF_ami) {
1795: deftype = ROFFDEF_ANY;
1796: value = roff_getstrn(r, iname, namesz, &deftype);
1797: switch (deftype) { /* Before appending, ... */
1798: case ROFFDEF_PRE: /* copy predefined to user-defined. */
1799: roff_setstrn(&r->strtab, name, namesz,
1800: value, strlen(value), 0);
1801: break;
1802: case ROFFDEF_REN: /* call original standard macro. */
1803: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1804: (int)strlen(value), value);
1805: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1806: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1807: free(call);
1808: break;
1809: case ROFFDEF_STD: /* rename and call standard macro. */
1810: rsz = mandoc_asprintf(&rname, "__%s_renamed", name);
1811: roff_setstrn(&r->rentab, rname, rsz, name, namesz, 0);
1812: csz = mandoc_asprintf(&call, ".%.*s \\$* \\\"\n",
1813: (int)rsz, rname);
1814: roff_setstrn(&r->strtab, name, namesz, call, csz, 0);
1815: free(call);
1816: free(rname);
1817: break;
1818: default:
1819: break;
1820: }
1.311 schwarze 1821: }
1.76 kristaps 1822:
1.238 schwarze 1823: if (*cp == '\0')
1.277 schwarze 1824: return ROFF_IGN;
1.78 kristaps 1825:
1.220 schwarze 1826: /* Get the custom end marker. */
1.107 kristaps 1827:
1.220 schwarze 1828: iname = cp;
1.213 schwarze 1829: namesz = roff_getname(r, &cp, ln, ppos);
1.220 schwarze 1830:
1831: /* Resolve the end marker if it is indirect. */
1832:
1.238 schwarze 1833: if (namesz && (tok == ROFF_dei || tok == ROFF_ami)) {
1.315 schwarze 1834: deftype = ROFFDEF_USER;
1835: name = roff_getstrn(r, iname, namesz, &deftype);
1836: if (name == NULL) {
1.220 schwarze 1837: mandoc_vmsg(MANDOCERR_STR_UNDEF,
1.238 schwarze 1838: r->parse, ln, (int)(iname - buf->buf),
1.220 schwarze 1839: "%.*s", (int)namesz, iname);
1840: namesz = 0;
1841: } else
1842: namesz = strlen(name);
1843: } else
1844: name = iname;
1845:
1.213 schwarze 1846: if (namesz)
1847: r->last->end = mandoc_strndup(name, namesz);
1.78 kristaps 1848:
1.238 schwarze 1849: if (*cp != '\0')
1.217 schwarze 1850: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
1.295 schwarze 1851: ln, pos, ".%s ... %s", roff_name[tok], cp);
1.74 kristaps 1852:
1.277 schwarze 1853: return ROFF_IGN;
1.78 kristaps 1854: }
1855:
1856: static enum rofferr
1.80 kristaps 1857: roff_block_sub(ROFF_ARGS)
1.79 kristaps 1858: {
1.294 schwarze 1859: enum roff_tok t;
1.79 kristaps 1860: int i, j;
1861:
1862: /*
1863: * First check whether a custom macro exists at this level. If
1864: * it does, then check against it. This is some of groff's
1865: * stranger behaviours. If we encountered a custom end-scope
1866: * tag and that tag also happens to be a "real" macro, then we
1867: * need to try interpreting it again as a real macro. If it's
1868: * not, then return ignore. Else continue.
1869: */
1870:
1871: if (r->last->end) {
1.130 kristaps 1872: for (i = pos, j = 0; r->last->end[j]; j++, i++)
1.238 schwarze 1873: if (buf->buf[i] != r->last->end[j])
1.79 kristaps 1874: break;
1875:
1.238 schwarze 1876: if (r->last->end[j] == '\0' &&
1877: (buf->buf[i] == '\0' ||
1878: buf->buf[i] == ' ' ||
1879: buf->buf[i] == '\t')) {
1.79 kristaps 1880: roffnode_pop(r);
1881: roffnode_cleanscope(r);
1882:
1.238 schwarze 1883: while (buf->buf[i] == ' ' || buf->buf[i] == '\t')
1.130 kristaps 1884: i++;
1885:
1886: pos = i;
1.238 schwarze 1887: if (roff_parse(r, buf->buf, &pos, ln, ppos) !=
1.294 schwarze 1888: TOKEN_NONE)
1.277 schwarze 1889: return ROFF_RERUN;
1890: return ROFF_IGN;
1.79 kristaps 1891: }
1892: }
1893:
1894: /*
1895: * If we have no custom end-query or lookup failed, then try
1896: * pulling it out of the hashtable.
1897: */
1898:
1.238 schwarze 1899: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.79 kristaps 1900:
1.238 schwarze 1901: if (t != ROFF_cblock) {
1902: if (tok != ROFF_ig)
1903: roff_setstr(r, r->last->name, buf->buf + ppos, 2);
1.277 schwarze 1904: return ROFF_IGN;
1.106 kristaps 1905: }
1.79 kristaps 1906:
1.277 schwarze 1907: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.79 kristaps 1908: }
1909:
1910: static enum rofferr
1.80 kristaps 1911: roff_block_text(ROFF_ARGS)
1.78 kristaps 1912: {
1913:
1.238 schwarze 1914: if (tok != ROFF_ig)
1915: roff_setstr(r, r->last->name, buf->buf + pos, 2);
1.106 kristaps 1916:
1.277 schwarze 1917: return ROFF_IGN;
1.78 kristaps 1918: }
1919:
1920: static enum rofferr
1.82 kristaps 1921: roff_cond_sub(ROFF_ARGS)
1922: {
1.294 schwarze 1923: enum roff_tok t;
1.139 kristaps 1924: char *ep;
1.198 schwarze 1925: int rr;
1.82 kristaps 1926:
1927: rr = r->last->rule;
1.139 kristaps 1928: roffnode_cleanscope(r);
1.238 schwarze 1929: t = roff_parse(r, buf->buf, &pos, ln, ppos);
1.82 kristaps 1930:
1.139 kristaps 1931: /*
1.177 schwarze 1932: * Fully handle known macros when they are structurally
1933: * required or when the conditional evaluated to true.
1.87 kristaps 1934: */
1935:
1.294 schwarze 1936: if (t != TOKEN_NONE && (rr || roffs[t].flags & ROFFMAC_STRUCT))
1.277 schwarze 1937: return (*roffs[t].proc)(r, t, buf, ln, ppos, pos, offs);
1.144 kristaps 1938:
1.196 schwarze 1939: /*
1940: * If `\}' occurs on a macro line without a preceding macro,
1941: * drop the line completely.
1942: */
1943:
1.238 schwarze 1944: ep = buf->buf + pos;
1945: if (ep[0] == '\\' && ep[1] == '}')
1.198 schwarze 1946: rr = 0;
1.196 schwarze 1947:
1.177 schwarze 1948: /* Always check for the closing delimiter `\}'. */
1.144 kristaps 1949:
1.238 schwarze 1950: while ((ep = strchr(ep, '\\')) != NULL) {
1951: if (*(++ep) == '}') {
1.197 schwarze 1952: *ep = '&';
1.238 schwarze 1953: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1954: }
1.247 schwarze 1955: if (*ep != '\0')
1956: ++ep;
1.177 schwarze 1957: }
1.277 schwarze 1958: return rr ? ROFF_CONT : ROFF_IGN;
1.82 kristaps 1959: }
1960:
1961: static enum rofferr
1962: roff_cond_text(ROFF_ARGS)
1.78 kristaps 1963: {
1.140 kristaps 1964: char *ep;
1.198 schwarze 1965: int rr;
1.82 kristaps 1966:
1967: rr = r->last->rule;
1.140 kristaps 1968: roffnode_cleanscope(r);
1.82 kristaps 1969:
1.238 schwarze 1970: ep = buf->buf + pos;
1971: while ((ep = strchr(ep, '\\')) != NULL) {
1972: if (*(++ep) == '}') {
1.197 schwarze 1973: *ep = '&';
1.238 schwarze 1974: roff_ccond(r, ln, ep - buf->buf - 1);
1.197 schwarze 1975: }
1.247 schwarze 1976: if (*ep != '\0')
1977: ++ep;
1.78 kristaps 1978: }
1.277 schwarze 1979: return rr ? ROFF_CONT : ROFF_IGN;
1.74 kristaps 1980: }
1981:
1.266 schwarze 1982: /* --- handling of numeric and conditional expressions -------------------- */
1983:
1.204 schwarze 1984: /*
1985: * Parse a single signed integer number. Stop at the first non-digit.
1986: * If there is at least one digit, return success and advance the
1987: * parse point, else return failure and let the parse point unchanged.
1988: * Ignore overflows, treat them just like the C language.
1989: */
1.184 schwarze 1990: static int
1.261 schwarze 1991: roff_getnum(const char *v, int *pos, int *res, int flags)
1.184 schwarze 1992: {
1.261 schwarze 1993: int myres, scaled, n, p;
1.206 schwarze 1994:
1995: if (NULL == res)
1996: res = &myres;
1.184 schwarze 1997:
1998: p = *pos;
1999: n = v[p] == '-';
1.261 schwarze 2000: if (n || v[p] == '+')
1.184 schwarze 2001: p++;
2002:
1.261 schwarze 2003: if (flags & ROFFNUM_WHITE)
2004: while (isspace((unsigned char)v[p]))
2005: p++;
2006:
1.184 schwarze 2007: for (*res = 0; isdigit((unsigned char)v[p]); p++)
1.204 schwarze 2008: *res = 10 * *res + v[p] - '0';
1.184 schwarze 2009: if (p == *pos + n)
2010: return 0;
2011:
2012: if (n)
2013: *res = -*res;
2014:
1.254 schwarze 2015: /* Each number may be followed by one optional scaling unit. */
2016:
2017: switch (v[p]) {
2018: case 'f':
1.261 schwarze 2019: scaled = *res * 65536;
1.254 schwarze 2020: break;
2021: case 'i':
1.261 schwarze 2022: scaled = *res * 240;
1.254 schwarze 2023: break;
2024: case 'c':
1.261 schwarze 2025: scaled = *res * 240 / 2.54;
1.254 schwarze 2026: break;
2027: case 'v':
2028: case 'P':
1.261 schwarze 2029: scaled = *res * 40;
1.254 schwarze 2030: break;
2031: case 'm':
2032: case 'n':
1.261 schwarze 2033: scaled = *res * 24;
1.254 schwarze 2034: break;
2035: case 'p':
1.261 schwarze 2036: scaled = *res * 10 / 3;
1.254 schwarze 2037: break;
2038: case 'u':
1.261 schwarze 2039: scaled = *res;
1.254 schwarze 2040: break;
2041: case 'M':
1.261 schwarze 2042: scaled = *res * 6 / 25;
1.254 schwarze 2043: break;
2044: default:
1.261 schwarze 2045: scaled = *res;
1.254 schwarze 2046: p--;
2047: break;
2048: }
1.261 schwarze 2049: if (flags & ROFFNUM_SCALE)
2050: *res = scaled;
1.254 schwarze 2051:
2052: *pos = p + 1;
1.277 schwarze 2053: return 1;
1.184 schwarze 2054: }
2055:
1.198 schwarze 2056: /*
2057: * Evaluate a string comparison condition.
2058: * The first character is the delimiter.
2059: * Succeed if the string up to its second occurrence
2060: * matches the string up to its third occurence.
2061: * Advance the cursor after the third occurrence
2062: * or lacking that, to the end of the line.
2063: */
2064: static int
2065: roff_evalstrcond(const char *v, int *pos)
2066: {
2067: const char *s1, *s2, *s3;
2068: int match;
2069:
2070: match = 0;
2071: s1 = v + *pos; /* initial delimiter */
2072: s2 = s1 + 1; /* for scanning the first string */
2073: s3 = strchr(s2, *s1); /* for scanning the second string */
2074:
2075: if (NULL == s3) /* found no middle delimiter */
2076: goto out;
2077:
2078: while ('\0' != *++s3) {
2079: if (*s2 != *s3) { /* mismatch */
2080: s3 = strchr(s3, *s1);
2081: break;
2082: }
2083: if (*s3 == *s1) { /* found the final delimiter */
2084: match = 1;
2085: break;
2086: }
2087: s2++;
2088: }
2089:
2090: out:
2091: if (NULL == s3)
2092: s3 = strchr(s2, '\0');
1.242 schwarze 2093: else if (*s3 != '\0')
1.198 schwarze 2094: s3++;
2095: *pos = s3 - v;
1.277 schwarze 2096: return match;
1.198 schwarze 2097: }
2098:
1.204 schwarze 2099: /*
2100: * Evaluate an optionally negated single character, numerical,
2101: * or string condition.
2102: */
1.198 schwarze 2103: static int
1.271 schwarze 2104: roff_evalcond(struct roff *r, int ln, char *v, int *pos)
1.88 kristaps 2105: {
1.271 schwarze 2106: char *cp, *name;
2107: size_t sz;
1.315 schwarze 2108: int deftype, number, savepos, istrue, wanttrue;
1.88 kristaps 2109:
1.198 schwarze 2110: if ('!' == v[*pos]) {
2111: wanttrue = 0;
2112: (*pos)++;
2113: } else
2114: wanttrue = 1;
2115:
1.88 kristaps 2116: switch (v[*pos]) {
1.240 schwarze 2117: case '\0':
1.277 schwarze 2118: return 0;
1.207 schwarze 2119: case 'n':
2120: case 'o':
1.88 kristaps 2121: (*pos)++;
1.277 schwarze 2122: return wanttrue;
1.207 schwarze 2123: case 'c':
2124: case 'e':
2125: case 't':
1.239 schwarze 2126: case 'v':
1.88 kristaps 2127: (*pos)++;
1.277 schwarze 2128: return !wanttrue;
1.310 schwarze 2129: case 'd':
1.271 schwarze 2130: case 'r':
1.310 schwarze 2131: cp = v + *pos + 1;
2132: while (*cp == ' ')
2133: cp++;
2134: name = cp;
2135: sz = roff_getname(r, &cp, ln, cp - v);
1.315 schwarze 2136: if (sz == 0)
2137: istrue = 0;
2138: else if (v[*pos] == 'r')
2139: istrue = roff_hasregn(r, name, sz);
2140: else {
2141: deftype = ROFFDEF_ANY;
2142: roff_getstrn(r, name, sz, &deftype);
2143: istrue = !!deftype;
2144: }
1.271 schwarze 2145: *pos = cp - v;
1.310 schwarze 2146: return istrue == wanttrue;
1.88 kristaps 2147: default:
2148: break;
2149: }
2150:
1.241 schwarze 2151: savepos = *pos;
1.261 schwarze 2152: if (roff_evalnum(r, ln, v, pos, &number, ROFFNUM_SCALE))
1.277 schwarze 2153: return (number > 0) == wanttrue;
1.241 schwarze 2154: else if (*pos == savepos)
1.277 schwarze 2155: return roff_evalstrcond(v, pos) == wanttrue;
1.204 schwarze 2156: else
1.277 schwarze 2157: return 0;
1.88 kristaps 2158: }
2159:
1.74 kristaps 2160: static enum rofferr
1.103 kristaps 2161: roff_line_ignore(ROFF_ARGS)
1.89 kristaps 2162: {
1.123 schwarze 2163:
1.277 schwarze 2164: return ROFF_IGN;
1.89 kristaps 2165: }
2166:
1.104 kristaps 2167: static enum rofferr
1.251 schwarze 2168: roff_insec(ROFF_ARGS)
2169: {
2170:
2171: mandoc_msg(MANDOCERR_REQ_INSEC, r->parse,
1.295 schwarze 2172: ln, ppos, roff_name[tok]);
1.277 schwarze 2173: return ROFF_IGN;
1.251 schwarze 2174: }
2175:
2176: static enum rofferr
2177: roff_unsupp(ROFF_ARGS)
2178: {
2179:
2180: mandoc_msg(MANDOCERR_REQ_UNSUPP, r->parse,
1.295 schwarze 2181: ln, ppos, roff_name[tok]);
1.277 schwarze 2182: return ROFF_IGN;
1.251 schwarze 2183: }
2184:
2185: static enum rofferr
1.82 kristaps 2186: roff_cond(ROFF_ARGS)
1.74 kristaps 2187: {
1.173 schwarze 2188:
2189: roffnode_push(r, tok, NULL, ln, ppos);
1.74 kristaps 2190:
1.207 schwarze 2191: /*
1.134 kristaps 2192: * An `.el' has no conditional body: it will consume the value
2193: * of the current rstack entry set in prior `ie' calls or
1.207 schwarze 2194: * defaults to DENY.
1.134 kristaps 2195: *
2196: * If we're not an `el', however, then evaluate the conditional.
2197: */
1.133 kristaps 2198:
1.238 schwarze 2199: r->last->rule = tok == ROFF_el ?
1.207 schwarze 2200: (r->rstackpos < 0 ? 0 : r->rstack[r->rstackpos--]) :
1.238 schwarze 2201: roff_evalcond(r, ln, buf->buf, &pos);
1.77 kristaps 2202:
1.134 kristaps 2203: /*
2204: * An if-else will put the NEGATION of the current evaluated
2205: * conditional into the stack of rules.
2206: */
2207:
1.238 schwarze 2208: if (tok == ROFF_ie) {
1.223 schwarze 2209: if (r->rstackpos + 1 == r->rstacksz) {
2210: r->rstacksz += 16;
2211: r->rstack = mandoc_reallocarray(r->rstack,
2212: r->rstacksz, sizeof(int));
1.134 kristaps 2213: }
1.198 schwarze 2214: r->rstack[++r->rstackpos] = !r->last->rule;
1.82 kristaps 2215: }
1.88 kristaps 2216:
2217: /* If the parent has false as its rule, then so do we. */
2218:
1.198 schwarze 2219: if (r->last->parent && !r->last->parent->rule)
2220: r->last->rule = 0;
1.88 kristaps 2221:
2222: /*
1.173 schwarze 2223: * Determine scope.
2224: * If there is nothing on the line after the conditional,
2225: * not even whitespace, use next-line scope.
1.88 kristaps 2226: */
1.74 kristaps 2227:
1.238 schwarze 2228: if (buf->buf[pos] == '\0') {
1.173 schwarze 2229: r->last->endspan = 2;
2230: goto out;
2231: }
2232:
1.238 schwarze 2233: while (buf->buf[pos] == ' ')
1.173 schwarze 2234: pos++;
2235:
2236: /* An opening brace requests multiline scope. */
1.75 kristaps 2237:
1.238 schwarze 2238: if (buf->buf[pos] == '\\' && buf->buf[pos + 1] == '{') {
1.75 kristaps 2239: r->last->endspan = -1;
2240: pos += 2;
1.272 schwarze 2241: while (buf->buf[pos] == ' ')
2242: pos++;
1.173 schwarze 2243: goto out;
1.207 schwarze 2244: }
1.74 kristaps 2245:
1.77 kristaps 2246: /*
1.173 schwarze 2247: * Anything else following the conditional causes
2248: * single-line scope. Warn if the scope contains
2249: * nothing but trailing whitespace.
1.77 kristaps 2250: */
2251:
1.238 schwarze 2252: if (buf->buf[pos] == '\0')
1.216 schwarze 2253: mandoc_msg(MANDOCERR_COND_EMPTY, r->parse,
1.295 schwarze 2254: ln, ppos, roff_name[tok]);
1.77 kristaps 2255:
1.173 schwarze 2256: r->last->endspan = 1;
1.74 kristaps 2257:
1.173 schwarze 2258: out:
1.75 kristaps 2259: *offs = pos;
1.277 schwarze 2260: return ROFF_RERUN;
1.83 schwarze 2261: }
2262:
2263: static enum rofferr
1.92 schwarze 2264: roff_ds(ROFF_ARGS)
2265: {
1.212 schwarze 2266: char *string;
2267: const char *name;
2268: size_t namesz;
1.96 kristaps 2269:
1.251 schwarze 2270: /* Ignore groff compatibility mode for now. */
2271:
2272: if (tok == ROFF_ds1)
2273: tok = ROFF_ds;
2274: else if (tok == ROFF_as1)
2275: tok = ROFF_as;
2276:
1.96 kristaps 2277: /*
1.212 schwarze 2278: * The first word is the name of the string.
2279: * If it is empty or terminated by an escape sequence,
2280: * abort the `ds' request without defining anything.
1.96 kristaps 2281: */
1.92 schwarze 2282:
1.238 schwarze 2283: name = string = buf->buf + pos;
2284: if (*name == '\0')
1.277 schwarze 2285: return ROFF_IGN;
1.92 schwarze 2286:
1.212 schwarze 2287: namesz = roff_getname(r, &string, ln, pos);
1.238 schwarze 2288: if (name[namesz] == '\\')
1.277 schwarze 2289: return ROFF_IGN;
1.212 schwarze 2290:
2291: /* Read past the initial double-quote, if any. */
1.238 schwarze 2292: if (*string == '"')
1.92 schwarze 2293: string++;
2294:
1.96 kristaps 2295: /* The rest is the value. */
1.212 schwarze 2296: roff_setstrn(&r->strtab, name, namesz, string, strlen(string),
2297: ROFF_as == tok);
1.311 schwarze 2298: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.277 schwarze 2299: return ROFF_IGN;
1.92 schwarze 2300: }
2301:
1.204 schwarze 2302: /*
2303: * Parse a single operator, one or two characters long.
2304: * If the operator is recognized, return success and advance the
2305: * parse point, else return failure and let the parse point unchanged.
2306: */
2307: static int
2308: roff_getop(const char *v, int *pos, char *res)
2309: {
2310:
2311: *res = v[*pos];
2312:
2313: switch (*res) {
1.207 schwarze 2314: case '+':
2315: case '-':
2316: case '*':
2317: case '/':
2318: case '%':
2319: case '&':
2320: case ':':
1.204 schwarze 2321: break;
2322: case '<':
2323: switch (v[*pos + 1]) {
1.207 schwarze 2324: case '=':
1.204 schwarze 2325: *res = 'l';
2326: (*pos)++;
2327: break;
1.207 schwarze 2328: case '>':
1.204 schwarze 2329: *res = '!';
2330: (*pos)++;
2331: break;
1.207 schwarze 2332: case '?':
1.204 schwarze 2333: *res = 'i';
2334: (*pos)++;
2335: break;
2336: default:
2337: break;
2338: }
2339: break;
2340: case '>':
2341: switch (v[*pos + 1]) {
1.207 schwarze 2342: case '=':
1.204 schwarze 2343: *res = 'g';
2344: (*pos)++;
2345: break;
1.207 schwarze 2346: case '?':
1.204 schwarze 2347: *res = 'a';
2348: (*pos)++;
2349: break;
2350: default:
2351: break;
2352: }
2353: break;
2354: case '=':
2355: if ('=' == v[*pos + 1])
2356: (*pos)++;
2357: break;
2358: default:
1.277 schwarze 2359: return 0;
1.204 schwarze 2360: }
2361: (*pos)++;
2362:
1.277 schwarze 2363: return *res;
1.204 schwarze 2364: }
2365:
2366: /*
2367: * Evaluate either a parenthesized numeric expression
2368: * or a single signed integer number.
2369: */
2370: static int
1.235 schwarze 2371: roff_evalpar(struct roff *r, int ln,
1.261 schwarze 2372: const char *v, int *pos, int *res, int flags)
1.204 schwarze 2373: {
2374:
2375: if ('(' != v[*pos])
1.277 schwarze 2376: return roff_getnum(v, pos, res, flags);
1.204 schwarze 2377:
2378: (*pos)++;
1.261 schwarze 2379: if ( ! roff_evalnum(r, ln, v, pos, res, flags | ROFFNUM_WHITE))
1.277 schwarze 2380: return 0;
1.204 schwarze 2381:
1.206 schwarze 2382: /*
2383: * Omission of the closing parenthesis
2384: * is an error in validation mode,
2385: * but ignored in evaluation mode.
2386: */
2387:
1.204 schwarze 2388: if (')' == v[*pos])
2389: (*pos)++;
1.206 schwarze 2390: else if (NULL == res)
1.277 schwarze 2391: return 0;
1.204 schwarze 2392:
1.277 schwarze 2393: return 1;
1.204 schwarze 2394: }
2395:
2396: /*
2397: * Evaluate a complete numeric expression.
2398: * Proceed left to right, there is no concept of precedence.
2399: */
2400: static int
1.235 schwarze 2401: roff_evalnum(struct roff *r, int ln, const char *v,
1.261 schwarze 2402: int *pos, int *res, int flags)
1.204 schwarze 2403: {
2404: int mypos, operand2;
2405: char operator;
2406:
2407: if (NULL == pos) {
2408: mypos = 0;
2409: pos = &mypos;
2410: }
2411:
1.261 schwarze 2412: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2413: while (isspace((unsigned char)v[*pos]))
2414: (*pos)++;
2415:
1.261 schwarze 2416: if ( ! roff_evalpar(r, ln, v, pos, res, flags))
1.277 schwarze 2417: return 0;
1.204 schwarze 2418:
2419: while (1) {
1.261 schwarze 2420: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2421: while (isspace((unsigned char)v[*pos]))
2422: (*pos)++;
2423:
2424: if ( ! roff_getop(v, pos, &operator))
2425: break;
2426:
1.261 schwarze 2427: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2428: while (isspace((unsigned char)v[*pos]))
2429: (*pos)++;
2430:
1.261 schwarze 2431: if ( ! roff_evalpar(r, ln, v, pos, &operand2, flags))
1.277 schwarze 2432: return 0;
1.204 schwarze 2433:
1.261 schwarze 2434: if (flags & ROFFNUM_WHITE)
1.204 schwarze 2435: while (isspace((unsigned char)v[*pos]))
2436: (*pos)++;
1.206 schwarze 2437:
2438: if (NULL == res)
2439: continue;
1.204 schwarze 2440:
2441: switch (operator) {
1.207 schwarze 2442: case '+':
1.204 schwarze 2443: *res += operand2;
2444: break;
1.207 schwarze 2445: case '-':
1.204 schwarze 2446: *res -= operand2;
2447: break;
1.207 schwarze 2448: case '*':
1.204 schwarze 2449: *res *= operand2;
2450: break;
1.207 schwarze 2451: case '/':
1.244 schwarze 2452: if (operand2 == 0) {
1.235 schwarze 2453: mandoc_msg(MANDOCERR_DIVZERO,
1.234 kristaps 2454: r->parse, ln, *pos, v);
2455: *res = 0;
2456: break;
2457: }
1.204 schwarze 2458: *res /= operand2;
2459: break;
1.207 schwarze 2460: case '%':
1.244 schwarze 2461: if (operand2 == 0) {
2462: mandoc_msg(MANDOCERR_DIVZERO,
2463: r->parse, ln, *pos, v);
2464: *res = 0;
2465: break;
2466: }
1.204 schwarze 2467: *res %= operand2;
2468: break;
1.207 schwarze 2469: case '<':
1.204 schwarze 2470: *res = *res < operand2;
2471: break;
1.207 schwarze 2472: case '>':
1.204 schwarze 2473: *res = *res > operand2;
2474: break;
1.207 schwarze 2475: case 'l':
1.204 schwarze 2476: *res = *res <= operand2;
2477: break;
1.207 schwarze 2478: case 'g':
1.204 schwarze 2479: *res = *res >= operand2;
2480: break;
1.207 schwarze 2481: case '=':
1.204 schwarze 2482: *res = *res == operand2;
2483: break;
1.207 schwarze 2484: case '!':
1.204 schwarze 2485: *res = *res != operand2;
2486: break;
1.207 schwarze 2487: case '&':
1.204 schwarze 2488: *res = *res && operand2;
2489: break;
1.207 schwarze 2490: case ':':
1.204 schwarze 2491: *res = *res || operand2;
2492: break;
1.207 schwarze 2493: case 'i':
1.204 schwarze 2494: if (operand2 < *res)
2495: *res = operand2;
2496: break;
1.207 schwarze 2497: case 'a':
1.204 schwarze 2498: if (operand2 > *res)
2499: *res = operand2;
2500: break;
2501: default:
2502: abort();
2503: }
2504: }
1.277 schwarze 2505: return 1;
1.204 schwarze 2506: }
2507:
1.266 schwarze 2508: /* --- register management ------------------------------------------------ */
2509:
1.180 schwarze 2510: void
1.187 schwarze 2511: roff_setreg(struct roff *r, const char *name, int val, char sign)
1.147 kristaps 2512: {
1.180 schwarze 2513: struct roffreg *reg;
2514:
2515: /* Search for an existing register with the same name. */
2516: reg = r->regtab;
2517:
2518: while (reg && strcmp(name, reg->key.p))
2519: reg = reg->next;
1.147 kristaps 2520:
1.180 schwarze 2521: if (NULL == reg) {
2522: /* Create a new register. */
2523: reg = mandoc_malloc(sizeof(struct roffreg));
2524: reg->key.p = mandoc_strdup(name);
2525: reg->key.sz = strlen(name);
1.187 schwarze 2526: reg->val = 0;
1.180 schwarze 2527: reg->next = r->regtab;
2528: r->regtab = reg;
2529: }
2530:
1.187 schwarze 2531: if ('+' == sign)
2532: reg->val += val;
2533: else if ('-' == sign)
2534: reg->val -= val;
2535: else
2536: reg->val = val;
1.147 kristaps 2537: }
2538:
1.192 schwarze 2539: /*
2540: * Handle some predefined read-only number registers.
2541: * For now, return -1 if the requested register is not predefined;
2542: * in case a predefined read-only register having the value -1
2543: * were to turn up, another special value would have to be chosen.
2544: */
2545: static int
1.273 schwarze 2546: roff_getregro(const struct roff *r, const char *name)
1.192 schwarze 2547: {
2548:
2549: switch (*name) {
1.273 schwarze 2550: case '$': /* Number of arguments of the last macro evaluated. */
1.277 schwarze 2551: return r->argc;
1.207 schwarze 2552: case 'A': /* ASCII approximation mode is always off. */
1.277 schwarze 2553: return 0;
1.207 schwarze 2554: case 'g': /* Groff compatibility mode is always on. */
1.277 schwarze 2555: return 1;
1.207 schwarze 2556: case 'H': /* Fixed horizontal resolution. */
1.277 schwarze 2557: return 24;
1.207 schwarze 2558: case 'j': /* Always adjust left margin only. */
1.277 schwarze 2559: return 0;
1.207 schwarze 2560: case 'T': /* Some output device is always defined. */
1.277 schwarze 2561: return 1;
1.207 schwarze 2562: case 'V': /* Fixed vertical resolution. */
1.277 schwarze 2563: return 40;
1.192 schwarze 2564: default:
1.277 schwarze 2565: return -1;
1.192 schwarze 2566: }
2567: }
2568:
1.181 schwarze 2569: int
1.180 schwarze 2570: roff_getreg(const struct roff *r, const char *name)
1.147 kristaps 2571: {
1.180 schwarze 2572: struct roffreg *reg;
1.192 schwarze 2573: int val;
2574:
2575: if ('.' == name[0] && '\0' != name[1] && '\0' == name[2]) {
1.273 schwarze 2576: val = roff_getregro(r, name + 1);
1.192 schwarze 2577: if (-1 != val)
1.277 schwarze 2578: return val;
1.192 schwarze 2579: }
1.180 schwarze 2580:
2581: for (reg = r->regtab; reg; reg = reg->next)
2582: if (0 == strcmp(name, reg->key.p))
1.277 schwarze 2583: return reg->val;
1.181 schwarze 2584:
1.277 schwarze 2585: return 0;
1.181 schwarze 2586: }
2587:
2588: static int
2589: roff_getregn(const struct roff *r, const char *name, size_t len)
2590: {
2591: struct roffreg *reg;
1.192 schwarze 2592: int val;
2593:
2594: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2595: val = roff_getregro(r, name + 1);
1.192 schwarze 2596: if (-1 != val)
1.277 schwarze 2597: return val;
1.192 schwarze 2598: }
1.181 schwarze 2599:
2600: for (reg = r->regtab; reg; reg = reg->next)
2601: if (len == reg->key.sz &&
2602: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2603: return reg->val;
1.271 schwarze 2604:
1.277 schwarze 2605: return 0;
1.271 schwarze 2606: }
2607:
2608: static int
2609: roff_hasregn(const struct roff *r, const char *name, size_t len)
2610: {
2611: struct roffreg *reg;
2612: int val;
2613:
2614: if ('.' == name[0] && 2 == len) {
1.273 schwarze 2615: val = roff_getregro(r, name + 1);
1.271 schwarze 2616: if (-1 != val)
1.277 schwarze 2617: return 1;
1.271 schwarze 2618: }
2619:
2620: for (reg = r->regtab; reg; reg = reg->next)
2621: if (len == reg->key.sz &&
2622: 0 == strncmp(name, reg->key.p, len))
1.277 schwarze 2623: return 1;
1.147 kristaps 2624:
1.277 schwarze 2625: return 0;
1.147 kristaps 2626: }
2627:
1.180 schwarze 2628: static void
2629: roff_freereg(struct roffreg *reg)
1.147 kristaps 2630: {
1.180 schwarze 2631: struct roffreg *old_reg;
1.147 kristaps 2632:
1.180 schwarze 2633: while (NULL != reg) {
2634: free(reg->key.p);
2635: old_reg = reg;
2636: reg = reg->next;
2637: free(old_reg);
2638: }
1.147 kristaps 2639: }
1.92 schwarze 2640:
2641: static enum rofferr
1.89 kristaps 2642: roff_nr(ROFF_ARGS)
1.83 schwarze 2643: {
1.212 schwarze 2644: char *key, *val;
2645: size_t keysz;
1.138 kristaps 2646: int iv;
1.187 schwarze 2647: char sign;
1.89 kristaps 2648:
1.238 schwarze 2649: key = val = buf->buf + pos;
2650: if (*key == '\0')
1.277 schwarze 2651: return ROFF_IGN;
1.212 schwarze 2652:
2653: keysz = roff_getname(r, &val, ln, pos);
1.238 schwarze 2654: if (key[keysz] == '\\')
1.277 schwarze 2655: return ROFF_IGN;
1.212 schwarze 2656: key[keysz] = '\0';
1.89 kristaps 2657:
1.187 schwarze 2658: sign = *val;
1.238 schwarze 2659: if (sign == '+' || sign == '-')
1.187 schwarze 2660: val++;
2661:
1.261 schwarze 2662: if (roff_evalnum(r, ln, val, NULL, &iv, ROFFNUM_SCALE))
1.204 schwarze 2663: roff_setreg(r, key, iv, sign);
1.109 kristaps 2664:
1.277 schwarze 2665: return ROFF_IGN;
1.203 schwarze 2666: }
2667:
2668: static enum rofferr
2669: roff_rr(ROFF_ARGS)
2670: {
2671: struct roffreg *reg, **prev;
1.212 schwarze 2672: char *name, *cp;
2673: size_t namesz;
1.203 schwarze 2674:
1.238 schwarze 2675: name = cp = buf->buf + pos;
2676: if (*name == '\0')
1.277 schwarze 2677: return ROFF_IGN;
1.212 schwarze 2678: namesz = roff_getname(r, &cp, ln, pos);
2679: name[namesz] = '\0';
1.203 schwarze 2680:
2681: prev = &r->regtab;
2682: while (1) {
2683: reg = *prev;
1.238 schwarze 2684: if (reg == NULL || !strcmp(name, reg->key.p))
1.203 schwarze 2685: break;
2686: prev = ®->next;
2687: }
1.238 schwarze 2688: if (reg != NULL) {
1.203 schwarze 2689: *prev = reg->next;
2690: free(reg->key.p);
2691: free(reg);
2692: }
1.277 schwarze 2693: return ROFF_IGN;
1.122 schwarze 2694: }
2695:
1.266 schwarze 2696: /* --- handler functions for roff requests -------------------------------- */
2697:
1.122 schwarze 2698: static enum rofferr
2699: roff_rm(ROFF_ARGS)
2700: {
2701: const char *name;
2702: char *cp;
1.212 schwarze 2703: size_t namesz;
1.122 schwarze 2704:
1.238 schwarze 2705: cp = buf->buf + pos;
2706: while (*cp != '\0') {
1.212 schwarze 2707: name = cp;
1.238 schwarze 2708: namesz = roff_getname(r, &cp, ln, (int)(cp - buf->buf));
1.212 schwarze 2709: roff_setstrn(&r->strtab, name, namesz, NULL, 0, 0);
1.311 schwarze 2710: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.238 schwarze 2711: if (name[namesz] == '\\')
1.212 schwarze 2712: break;
1.122 schwarze 2713: }
1.277 schwarze 2714: return ROFF_IGN;
1.178 schwarze 2715: }
2716:
2717: static enum rofferr
2718: roff_it(ROFF_ARGS)
2719: {
2720: int iv;
2721:
2722: /* Parse the number of lines. */
1.261 schwarze 2723:
2724: if ( ! roff_evalnum(r, ln, buf->buf, &pos, &iv, 0)) {
1.222 schwarze 2725: mandoc_msg(MANDOCERR_IT_NONUM, r->parse,
1.238 schwarze 2726: ln, ppos, buf->buf + 1);
1.277 schwarze 2727: return ROFF_IGN;
1.178 schwarze 2728: }
2729:
1.262 schwarze 2730: while (isspace((unsigned char)buf->buf[pos]))
2731: pos++;
2732:
2733: /*
2734: * Arm the input line trap.
2735: * Special-casing "an-trap" is an ugly workaround to cope
2736: * with DocBook stupidly fiddling with man(7) internals.
2737: */
1.261 schwarze 2738:
1.178 schwarze 2739: roffit_lines = iv;
1.262 schwarze 2740: roffit_macro = mandoc_strdup(iv != 1 ||
2741: strcmp(buf->buf + pos, "an-trap") ?
2742: buf->buf + pos : "br");
1.277 schwarze 2743: return ROFF_IGN;
1.175 schwarze 2744: }
2745:
2746: static enum rofferr
2747: roff_Dd(ROFF_ARGS)
2748: {
1.315 schwarze 2749: int mask;
2750: enum roff_tok t, te;
1.227 schwarze 2751:
1.315 schwarze 2752: switch (tok) {
2753: case ROFF_Dd:
2754: tok = MDOC_Dd;
2755: te = MDOC_MAX;
2756: if (r->format == 0)
2757: r->format = MPARSE_MDOC;
2758: mask = MPARSE_MDOC | MPARSE_QUICK;
2759: break;
2760: case ROFF_TH:
2761: tok = MAN_TH;
2762: te = MAN_MAX;
2763: if (r->format == 0)
2764: r->format = MPARSE_MAN;
2765: mask = MPARSE_QUICK;
2766: break;
2767: default:
2768: abort();
2769: }
2770: if ((r->options & mask) == 0)
2771: for (t = tok; t < te; t++)
2772: roff_setstr(r, roff_name[t], NULL, 0);
1.277 schwarze 2773: return ROFF_CONT;
1.109 kristaps 2774: }
2775:
2776: static enum rofferr
2777: roff_TE(ROFF_ARGS)
2778: {
2779:
2780: if (NULL == r->tbl)
1.221 schwarze 2781: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2782: ln, ppos, "TE");
1.258 schwarze 2783: else if ( ! tbl_end(&r->tbl)) {
2784: free(buf->buf);
2785: buf->buf = mandoc_strdup(".sp");
2786: buf->sz = 4;
1.277 schwarze 2787: return ROFF_REPARSE;
1.258 schwarze 2788: }
1.277 schwarze 2789: return ROFF_IGN;
1.112 kristaps 2790: }
2791:
2792: static enum rofferr
2793: roff_T_(ROFF_ARGS)
2794: {
2795:
2796: if (NULL == r->tbl)
1.221 schwarze 2797: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse,
2798: ln, ppos, "T&");
1.112 kristaps 2799: else
1.296 schwarze 2800: tbl_restart(ln, ppos, r->tbl);
1.112 kristaps 2801:
1.277 schwarze 2802: return ROFF_IGN;
1.109 kristaps 2803: }
2804:
1.230 schwarze 2805: /*
2806: * Handle in-line equation delimiters.
2807: */
2808: static enum rofferr
1.238 schwarze 2809: roff_eqndelim(struct roff *r, struct buf *buf, int pos)
1.151 kristaps 2810: {
1.233 schwarze 2811: char *cp1, *cp2;
2812: const char *bef_pr, *bef_nl, *mac, *aft_nl, *aft_pr;
1.151 kristaps 2813:
1.230 schwarze 2814: /*
2815: * Outside equations, look for an opening delimiter.
2816: * If we are inside an equation, we already know it is
2817: * in-line, or this function wouldn't have been called;
2818: * so look for a closing delimiter.
2819: */
2820:
1.238 schwarze 2821: cp1 = buf->buf + pos;
1.230 schwarze 2822: cp2 = strchr(cp1, r->eqn == NULL ?
2823: r->last_eqn->odelim : r->last_eqn->cdelim);
2824: if (cp2 == NULL)
1.277 schwarze 2825: return ROFF_CONT;
1.230 schwarze 2826:
1.233 schwarze 2827: *cp2++ = '\0';
2828: bef_pr = bef_nl = aft_nl = aft_pr = "";
2829:
2830: /* Handle preceding text, protecting whitespace. */
2831:
1.238 schwarze 2832: if (*buf->buf != '\0') {
1.233 schwarze 2833: if (r->eqn == NULL)
2834: bef_pr = "\\&";
2835: bef_nl = "\n";
2836: }
2837:
2838: /*
2839: * Prepare replacing the delimiter with an equation macro
2840: * and drop leading white space from the equation.
2841: */
1.230 schwarze 2842:
1.233 schwarze 2843: if (r->eqn == NULL) {
2844: while (*cp2 == ' ')
2845: cp2++;
2846: mac = ".EQ";
2847: } else
2848: mac = ".EN";
2849:
2850: /* Handle following text, protecting whitespace. */
2851:
2852: if (*cp2 != '\0') {
2853: aft_nl = "\n";
2854: if (r->eqn != NULL)
2855: aft_pr = "\\&";
2856: }
2857:
2858: /* Do the actual replacement. */
2859:
1.238 schwarze 2860: buf->sz = mandoc_asprintf(&cp1, "%s%s%s%s%s%s%s", buf->buf,
1.233 schwarze 2861: bef_pr, bef_nl, mac, aft_nl, aft_pr, cp2) + 1;
1.238 schwarze 2862: free(buf->buf);
2863: buf->buf = cp1;
1.230 schwarze 2864:
2865: /* Toggle the in-line state of the eqn subsystem. */
2866:
2867: r->eqn_inline = r->eqn == NULL;
1.277 schwarze 2868: return ROFF_REPARSE;
1.151 kristaps 2869: }
2870:
1.235 schwarze 2871: static enum rofferr
2872: roff_EQ(ROFF_ARGS)
1.125 kristaps 2873: {
1.151 kristaps 2874: struct eqn_node *e;
1.125 kristaps 2875:
1.238 schwarze 2876: assert(r->eqn == NULL);
1.235 schwarze 2877: e = eqn_alloc(ppos, ln, r->parse);
1.125 kristaps 2878:
1.230 schwarze 2879: if (r->last_eqn) {
1.125 kristaps 2880: r->last_eqn->next = e;
1.230 schwarze 2881: e->delim = r->last_eqn->delim;
2882: e->odelim = r->last_eqn->odelim;
2883: e->cdelim = r->last_eqn->cdelim;
2884: } else
1.125 kristaps 2885: r->first_eqn = r->last_eqn = e;
2886:
2887: r->eqn = r->last_eqn = e;
1.151 kristaps 2888:
1.238 schwarze 2889: if (buf->buf[pos] != '\0')
1.235 schwarze 2890: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
1.238 schwarze 2891: ".EQ %s", buf->buf + pos);
1.151 kristaps 2892:
1.277 schwarze 2893: return ROFF_IGN;
1.125 kristaps 2894: }
2895:
2896: static enum rofferr
2897: roff_EN(ROFF_ARGS)
2898: {
2899:
1.221 schwarze 2900: mandoc_msg(MANDOCERR_BLK_NOTOPEN, r->parse, ln, ppos, "EN");
1.277 schwarze 2901: return ROFF_IGN;
1.125 kristaps 2902: }
2903:
2904: static enum rofferr
1.109 kristaps 2905: roff_TS(ROFF_ARGS)
2906: {
1.176 schwarze 2907: struct tbl_node *tbl;
1.89 kristaps 2908:
1.115 kristaps 2909: if (r->tbl) {
1.221 schwarze 2910: mandoc_msg(MANDOCERR_BLK_BROKEN, r->parse,
2911: ln, ppos, "TS breaks TS");
1.151 kristaps 2912: tbl_end(&r->tbl);
1.115 kristaps 2913: }
1.83 schwarze 2914:
1.176 schwarze 2915: tbl = tbl_alloc(ppos, ln, r->parse);
1.113 kristaps 2916:
2917: if (r->last_tbl)
1.176 schwarze 2918: r->last_tbl->next = tbl;
1.113 kristaps 2919: else
1.176 schwarze 2920: r->first_tbl = r->last_tbl = tbl;
1.113 kristaps 2921:
1.176 schwarze 2922: r->tbl = r->last_tbl = tbl;
1.297 schwarze 2923: return ROFF_IGN;
2924: }
2925:
2926: static enum rofferr
2927: roff_onearg(ROFF_ARGS)
2928: {
2929: struct roff_node *n;
2930: char *cp;
1.305 schwarze 2931: int npos;
1.297 schwarze 2932:
1.302 schwarze 2933: if (r->man->flags & (MAN_BLINE | MAN_ELINE) &&
2934: (tok == ROFF_sp || tok == ROFF_ti))
2935: man_breakscope(r->man, tok);
2936:
1.309 schwarze 2937: if (roffce_node != NULL && (tok == ROFF_ce || tok == ROFF_rj)) {
1.305 schwarze 2938: r->man->last = roffce_node;
2939: r->man->next = ROFF_NEXT_SIBLING;
2940: }
2941:
1.297 schwarze 2942: roff_elem_alloc(r->man, ln, ppos, tok);
2943: n = r->man->last;
2944:
2945: cp = buf->buf + pos;
2946: if (*cp != '\0') {
2947: while (*cp != '\0' && *cp != ' ')
2948: cp++;
2949: while (*cp == ' ')
2950: *cp++ = '\0';
2951: if (*cp != '\0')
2952: mandoc_vmsg(MANDOCERR_ARG_EXCESS,
2953: r->parse, ln, cp - buf->buf,
2954: "%s ... %s", roff_name[tok], cp);
2955: roff_word_alloc(r->man, ln, pos, buf->buf + pos);
1.300 schwarze 2956: }
2957:
1.309 schwarze 2958: if (tok == ROFF_ce || tok == ROFF_rj) {
2959: if (r->man->last->type == ROFFT_ELEM) {
1.305 schwarze 2960: roff_word_alloc(r->man, ln, pos, "1");
2961: r->man->last->flags |= NODE_NOSRC;
2962: }
2963: npos = 0;
2964: if (roff_evalnum(r, ln, r->man->last->string, &npos,
2965: &roffce_lines, 0) == 0) {
2966: mandoc_vmsg(MANDOCERR_CE_NONUM,
2967: r->parse, ln, pos, "ce %s", buf->buf + pos);
2968: roffce_lines = 1;
2969: }
2970: if (roffce_lines < 1) {
2971: r->man->last = r->man->last->parent;
2972: roffce_node = NULL;
2973: roffce_lines = 0;
2974: } else
2975: roffce_node = r->man->last->parent;
2976: } else {
2977: n->flags |= NODE_VALID | NODE_ENDED;
2978: r->man->last = n;
2979: }
2980: n->flags |= NODE_LINE;
1.300 schwarze 2981: r->man->next = ROFF_NEXT_SIBLING;
2982: return ROFF_IGN;
2983: }
2984:
2985: static enum rofferr
2986: roff_manyarg(ROFF_ARGS)
2987: {
2988: struct roff_node *n;
2989: char *sp, *ep;
2990:
2991: roff_elem_alloc(r->man, ln, ppos, tok);
2992: n = r->man->last;
2993:
2994: for (sp = ep = buf->buf + pos; *sp != '\0'; sp = ep) {
2995: while (*ep != '\0' && *ep != ' ')
2996: ep++;
2997: while (*ep == ' ')
2998: *ep++ = '\0';
2999: roff_word_alloc(r->man, ln, sp - buf->buf, sp);
1.297 schwarze 3000: }
3001:
3002: n->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3003: r->man->last = n;
3004: r->man->next = ROFF_NEXT_SIBLING;
1.277 schwarze 3005: return ROFF_IGN;
1.251 schwarze 3006: }
3007:
3008: static enum rofferr
1.311 schwarze 3009: roff_als(ROFF_ARGS)
3010: {
3011: char *oldn, *newn, *end, *value;
3012: size_t oldsz, newsz, valsz;
3013:
3014: newn = oldn = buf->buf + pos;
3015: if (*newn == '\0')
3016: return ROFF_IGN;
3017:
3018: newsz = roff_getname(r, &oldn, ln, pos);
3019: if (newn[newsz] == '\\' || *oldn == '\0')
3020: return ROFF_IGN;
3021:
3022: end = oldn;
3023: oldsz = roff_getname(r, &end, ln, oldn - buf->buf);
3024: if (oldsz == 0)
3025: return ROFF_IGN;
3026:
1.315 schwarze 3027: valsz = mandoc_asprintf(&value, ".%.*s \\$*\\\"\n",
3028: (int)oldsz, oldn);
1.311 schwarze 3029: roff_setstrn(&r->strtab, newn, newsz, value, valsz, 0);
3030: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3031: free(value);
3032: return ROFF_IGN;
3033: }
3034:
3035: static enum rofferr
1.296 schwarze 3036: roff_br(ROFF_ARGS)
1.251 schwarze 3037: {
1.302 schwarze 3038: if (r->man->flags & (MAN_BLINE | MAN_ELINE))
3039: man_breakscope(r->man, ROFF_br);
1.296 schwarze 3040: roff_elem_alloc(r->man, ln, ppos, ROFF_br);
3041: if (buf->buf[pos] != '\0')
3042: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse, ln, pos,
3043: "%s %s", roff_name[tok], buf->buf + pos);
3044: r->man->last->flags |= NODE_LINE | NODE_VALID | NODE_ENDED;
3045: r->man->next = ROFF_NEXT_SIBLING;
3046: return ROFF_IGN;
1.92 schwarze 3047: }
3048:
1.105 kristaps 3049: static enum rofferr
1.174 kristaps 3050: roff_cc(ROFF_ARGS)
3051: {
3052: const char *p;
3053:
1.238 schwarze 3054: p = buf->buf + pos;
1.174 kristaps 3055:
1.238 schwarze 3056: if (*p == '\0' || (r->control = *p++) == '.')
1.303 schwarze 3057: r->control = '\0';
1.174 kristaps 3058:
1.238 schwarze 3059: if (*p != '\0')
1.260 schwarze 3060: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3061: ln, p - buf->buf, "cc ... %s", p);
1.174 kristaps 3062:
1.277 schwarze 3063: return ROFF_IGN;
1.174 kristaps 3064: }
3065:
3066: static enum rofferr
1.303 schwarze 3067: roff_ec(ROFF_ARGS)
3068: {
3069: const char *p;
3070:
3071: p = buf->buf + pos;
3072: if (*p == '\0')
3073: r->escape = '\\';
3074: else {
3075: r->escape = *p;
3076: if (*++p != '\0')
3077: mandoc_vmsg(MANDOCERR_ARG_EXCESS, r->parse,
3078: ln, p - buf->buf, "ec ... %s", p);
3079: }
3080: return ROFF_IGN;
3081: }
3082:
3083: static enum rofferr
3084: roff_eo(ROFF_ARGS)
3085: {
3086: r->escape = '\0';
3087: if (buf->buf[pos] != '\0')
3088: mandoc_vmsg(MANDOCERR_ARG_SKIP, r->parse,
3089: ln, pos, "eo %s", buf->buf + pos);
3090: return ROFF_IGN;
3091: }
3092:
3093: static enum rofferr
1.164 kristaps 3094: roff_tr(ROFF_ARGS)
3095: {
3096: const char *p, *first, *second;
3097: size_t fsz, ssz;
3098: enum mandoc_esc esc;
3099:
1.238 schwarze 3100: p = buf->buf + pos;
1.164 kristaps 3101:
1.238 schwarze 3102: if (*p == '\0') {
1.260 schwarze 3103: mandoc_msg(MANDOCERR_REQ_EMPTY, r->parse, ln, ppos, "tr");
1.277 schwarze 3104: return ROFF_IGN;
1.164 kristaps 3105: }
3106:
1.238 schwarze 3107: while (*p != '\0') {
1.164 kristaps 3108: fsz = ssz = 1;
3109:
3110: first = p++;
1.238 schwarze 3111: if (*first == '\\') {
1.164 kristaps 3112: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3113: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3114: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3115: ln, (int)(p - buf->buf), first);
1.277 schwarze 3116: return ROFF_IGN;
1.164 kristaps 3117: }
3118: fsz = (size_t)(p - first);
3119: }
3120:
3121: second = p++;
1.238 schwarze 3122: if (*second == '\\') {
1.164 kristaps 3123: esc = mandoc_escape(&p, NULL, NULL);
1.238 schwarze 3124: if (esc == ESCAPE_ERROR) {
1.219 schwarze 3125: mandoc_msg(MANDOCERR_ESC_BAD, r->parse,
1.238 schwarze 3126: ln, (int)(p - buf->buf), second);
1.277 schwarze 3127: return ROFF_IGN;
1.164 kristaps 3128: }
3129: ssz = (size_t)(p - second);
1.238 schwarze 3130: } else if (*second == '\0') {
1.260 schwarze 3131: mandoc_vmsg(MANDOCERR_TR_ODD, r->parse,
3132: ln, first - buf->buf, "tr %s", first);
1.164 kristaps 3133: second = " ";
1.165 kristaps 3134: p--;
1.164 kristaps 3135: }
3136:
1.167 kristaps 3137: if (fsz > 1) {
1.207 schwarze 3138: roff_setstrn(&r->xmbtab, first, fsz,
3139: second, ssz, 0);
1.167 kristaps 3140: continue;
3141: }
3142:
1.238 schwarze 3143: if (r->xtab == NULL)
1.207 schwarze 3144: r->xtab = mandoc_calloc(128,
3145: sizeof(struct roffstr));
1.167 kristaps 3146:
3147: free(r->xtab[(int)*first].p);
3148: r->xtab[(int)*first].p = mandoc_strndup(second, ssz);
3149: r->xtab[(int)*first].sz = ssz;
1.164 kristaps 3150: }
3151:
1.277 schwarze 3152: return ROFF_IGN;
1.164 kristaps 3153: }
3154:
3155: static enum rofferr
1.306 schwarze 3156: roff_rn(ROFF_ARGS)
3157: {
3158: const char *value;
3159: char *oldn, *newn, *end;
3160: size_t oldsz, newsz;
1.315 schwarze 3161: int deftype;
1.306 schwarze 3162:
3163: oldn = newn = buf->buf + pos;
3164: if (*oldn == '\0')
3165: return ROFF_IGN;
3166:
3167: oldsz = roff_getname(r, &newn, ln, pos);
3168: if (oldn[oldsz] == '\\' || *newn == '\0')
3169: return ROFF_IGN;
3170:
3171: end = newn;
3172: newsz = roff_getname(r, &end, ln, newn - buf->buf);
3173: if (newsz == 0)
3174: return ROFF_IGN;
3175:
1.315 schwarze 3176: deftype = ROFFDEF_ANY;
3177: value = roff_getstrn(r, oldn, oldsz, &deftype);
3178: switch (deftype) {
3179: case ROFFDEF_USER:
1.306 schwarze 3180: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3181: roff_setstrn(&r->strtab, oldn, oldsz, NULL, 0, 0);
3182: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
1.315 schwarze 3183: break;
3184: case ROFFDEF_PRE:
3185: roff_setstrn(&r->strtab, newn, newsz, value, strlen(value), 0);
3186: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3187: break;
3188: case ROFFDEF_REN:
1.306 schwarze 3189: roff_setstrn(&r->rentab, newn, newsz, value, strlen(value), 0);
3190: roff_setstrn(&r->rentab, oldn, oldsz, NULL, 0, 0);
1.315 schwarze 3191: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3192: break;
3193: case ROFFDEF_STD:
1.306 schwarze 3194: roff_setstrn(&r->rentab, newn, newsz, oldn, oldsz, 0);
1.315 schwarze 3195: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3196: break;
3197: default:
3198: roff_setstrn(&r->strtab, newn, newsz, NULL, 0, 0);
3199: roff_setstrn(&r->rentab, newn, newsz, NULL, 0, 0);
3200: break;
3201: }
1.306 schwarze 3202: return ROFF_IGN;
3203: }
3204:
3205: static enum rofferr
1.105 kristaps 3206: roff_so(ROFF_ARGS)
3207: {
1.249 schwarze 3208: char *name, *cp;
1.105 kristaps 3209:
1.238 schwarze 3210: name = buf->buf + pos;
1.224 schwarze 3211: mandoc_vmsg(MANDOCERR_SO, r->parse, ln, ppos, "so %s", name);
1.105 kristaps 3212:
3213: /*
3214: * Handle `so'. Be EXTREMELY careful, as we shouldn't be
3215: * opening anything that's not in our cwd or anything beneath
3216: * it. Thus, explicitly disallow traversing up the file-system
3217: * or using absolute paths.
3218: */
3219:
1.238 schwarze 3220: if (*name == '/' || strstr(name, "../") || strstr(name, "/..")) {
1.210 schwarze 3221: mandoc_vmsg(MANDOCERR_SO_PATH, r->parse, ln, ppos,
3222: ".so %s", name);
1.249 schwarze 3223: buf->sz = mandoc_asprintf(&cp,
3224: ".sp\nSee the file %s.\n.sp", name) + 1;
3225: free(buf->buf);
3226: buf->buf = cp;
3227: *offs = 0;
1.277 schwarze 3228: return ROFF_REPARSE;
1.105 kristaps 3229: }
3230:
3231: *offs = pos;
1.277 schwarze 3232: return ROFF_SO;
1.105 kristaps 3233: }
1.92 schwarze 3234:
1.266 schwarze 3235: /* --- user defined strings and macros ------------------------------------ */
3236:
1.106 kristaps 3237: static enum rofferr
3238: roff_userdef(ROFF_ARGS)
1.99 kristaps 3239: {
1.311 schwarze 3240: const char *arg[16], *ap;
1.106 kristaps 3241: char *cp, *n1, *n2;
1.292 schwarze 3242: int expand_count, i, ib, ie;
1.263 schwarze 3243: size_t asz, rsz;
1.106 kristaps 3244:
3245: /*
3246: * Collect pointers to macro argument strings
1.188 schwarze 3247: * and NUL-terminate them.
1.106 kristaps 3248: */
1.263 schwarze 3249:
1.273 schwarze 3250: r->argc = 0;
1.238 schwarze 3251: cp = buf->buf + pos;
1.311 schwarze 3252: for (i = 0; i < 16; i++) {
1.273 schwarze 3253: if (*cp == '\0')
3254: arg[i] = "";
3255: else {
3256: arg[i] = mandoc_getarg(r->parse, &cp, ln, &pos);
3257: r->argc = i + 1;
3258: }
3259: }
1.99 kristaps 3260:
1.106 kristaps 3261: /*
3262: * Expand macro arguments.
1.99 kristaps 3263: */
1.263 schwarze 3264:
3265: buf->sz = strlen(r->current_string) + 1;
1.292 schwarze 3266: n1 = n2 = cp = mandoc_malloc(buf->sz);
1.263 schwarze 3267: memcpy(n1, r->current_string, buf->sz);
1.292 schwarze 3268: expand_count = 0;
1.263 schwarze 3269: while (*cp != '\0') {
3270:
3271: /* Scan ahead for the next argument invocation. */
3272:
3273: if (*cp++ != '\\')
3274: continue;
3275: if (*cp++ != '$')
3276: continue;
1.274 schwarze 3277: if (*cp == '*') { /* \\$* inserts all arguments */
3278: ib = 0;
3279: ie = r->argc - 1;
3280: } else { /* \\$1 .. \\$9 insert one argument */
3281: ib = ie = *cp - '1';
3282: if (ib < 0 || ib > 8)
3283: continue;
3284: }
1.263 schwarze 3285: cp -= 2;
1.292 schwarze 3286:
3287: /*
3288: * Prevent infinite recursion.
3289: */
3290:
3291: if (cp >= n2)
3292: expand_count = 1;
3293: else if (++expand_count > EXPAND_LIMIT) {
3294: mandoc_msg(MANDOCERR_ROFFLOOP, r->parse,
3295: ln, (int)(cp - n1), NULL);
1.293 schwarze 3296: free(buf->buf);
3297: buf->buf = n1;
1.292 schwarze 3298: return ROFF_IGN;
3299: }
1.263 schwarze 3300:
3301: /*
3302: * Determine the size of the expanded argument,
3303: * taking escaping of quotes into account.
3304: */
3305:
1.274 schwarze 3306: asz = ie > ib ? ie - ib : 0; /* for blanks */
3307: for (i = ib; i <= ie; i++) {
3308: for (ap = arg[i]; *ap != '\0'; ap++) {
3309: asz++;
3310: if (*ap == '"')
3311: asz += 3;
3312: }
1.263 schwarze 3313: }
3314: if (asz != 3) {
3315:
3316: /*
3317: * Determine the size of the rest of the
3318: * unexpanded macro, including the NUL.
3319: */
3320:
3321: rsz = buf->sz - (cp - n1) - 3;
3322:
3323: /*
3324: * When shrinking, move before
3325: * releasing the storage.
3326: */
3327:
3328: if (asz < 3)
3329: memmove(cp + asz, cp + 3, rsz);
3330:
3331: /*
3332: * Resize the storage for the macro
3333: * and readjust the parse pointer.
3334: */
3335:
3336: buf->sz += asz - 3;
3337: n2 = mandoc_realloc(n1, buf->sz);
3338: cp = n2 + (cp - n1);
3339: n1 = n2;
3340:
3341: /*
3342: * When growing, make room
3343: * for the expanded argument.
3344: */
3345:
3346: if (asz > 3)
3347: memmove(cp + asz, cp + 3, rsz);
3348: }
3349:
3350: /* Copy the expanded argument, escaping quotes. */
3351:
3352: n2 = cp;
1.274 schwarze 3353: for (i = ib; i <= ie; i++) {
3354: for (ap = arg[i]; *ap != '\0'; ap++) {
3355: if (*ap == '"') {
3356: memcpy(n2, "\\(dq", 4);
3357: n2 += 4;
3358: } else
3359: *n2++ = *ap;
3360: }
3361: if (i < ie)
3362: *n2++ = ' ';
1.106 kristaps 3363: }
1.99 kristaps 3364: }
3365:
1.106 kristaps 3366: /*
3367: * Replace the macro invocation
3368: * by the expanded macro.
3369: */
1.263 schwarze 3370:
1.238 schwarze 3371: free(buf->buf);
3372: buf->buf = n1;
1.248 schwarze 3373: *offs = 0;
1.106 kristaps 3374:
1.277 schwarze 3375: return buf->sz > 1 && buf->buf[buf->sz - 2] == '\n' ?
3376: ROFF_REPARSE : ROFF_APPEND;
1.99 kristaps 3377: }
1.121 schwarze 3378:
1.306 schwarze 3379: /*
3380: * Calling a high-level macro that was renamed with .rn.
3381: * r->current_string has already been set up by roff_parse().
3382: */
3383: static enum rofferr
3384: roff_renamed(ROFF_ARGS)
3385: {
3386: char *nbuf;
3387:
1.315 schwarze 3388: buf->sz = mandoc_asprintf(&nbuf, ".%s%s%s", r->current_string,
3389: buf->buf[pos] == '\0' ? "" : " ", buf->buf + pos) + 1;
1.306 schwarze 3390: free(buf->buf);
3391: buf->buf = nbuf;
3392: return ROFF_CONT;
3393: }
3394:
1.212 schwarze 3395: static size_t
1.121 schwarze 3396: roff_getname(struct roff *r, char **cpp, int ln, int pos)
3397: {
3398: char *name, *cp;
1.212 schwarze 3399: size_t namesz;
1.121 schwarze 3400:
3401: name = *cpp;
3402: if ('\0' == *name)
1.277 schwarze 3403: return 0;
1.121 schwarze 3404:
1.212 schwarze 3405: /* Read until end of name and terminate it with NUL. */
3406: for (cp = name; 1; cp++) {
3407: if ('\0' == *cp || ' ' == *cp) {
3408: namesz = cp - name;
3409: break;
3410: }
1.121 schwarze 3411: if ('\\' != *cp)
3412: continue;
1.215 schwarze 3413: namesz = cp - name;
3414: if ('{' == cp[1] || '}' == cp[1])
3415: break;
1.121 schwarze 3416: cp++;
3417: if ('\\' == *cp)
3418: continue;
1.224 schwarze 3419: mandoc_vmsg(MANDOCERR_NAMESC, r->parse, ln, pos,
3420: "%.*s", (int)(cp - name + 1), name);
1.212 schwarze 3421: mandoc_escape((const char **)&cp, NULL, NULL);
3422: break;
1.121 schwarze 3423: }
3424:
3425: /* Read past spaces. */
3426: while (' ' == *cp)
3427: cp++;
3428:
3429: *cpp = cp;
1.277 schwarze 3430: return namesz;
1.121 schwarze 3431: }
3432:
1.106 kristaps 3433: /*
3434: * Store *string into the user-defined string called *name.
3435: * To clear an existing entry, call with (*r, *name, NULL, 0).
1.193 schwarze 3436: * append == 0: replace mode
3437: * append == 1: single-line append mode
3438: * append == 2: multiline append mode, append '\n' after each call
1.106 kristaps 3439: */
1.94 kristaps 3440: static void
1.106 kristaps 3441: roff_setstr(struct roff *r, const char *name, const char *string,
1.193 schwarze 3442: int append)
1.92 schwarze 3443: {
1.315 schwarze 3444: size_t namesz;
1.164 kristaps 3445:
1.315 schwarze 3446: namesz = strlen(name);
3447: roff_setstrn(&r->strtab, name, namesz, string,
1.207 schwarze 3448: string ? strlen(string) : 0, append);
1.315 schwarze 3449: roff_setstrn(&r->rentab, name, namesz, NULL, 0, 0);
1.164 kristaps 3450: }
3451:
3452: static void
1.166 kristaps 3453: roff_setstrn(struct roffkv **r, const char *name, size_t namesz,
1.193 schwarze 3454: const char *string, size_t stringsz, int append)
1.164 kristaps 3455: {
1.166 kristaps 3456: struct roffkv *n;
1.164 kristaps 3457: char *c;
3458: int i;
3459: size_t oldch, newch;
1.92 schwarze 3460:
1.106 kristaps 3461: /* Search for an existing string with the same name. */
1.164 kristaps 3462: n = *r;
3463:
1.211 schwarze 3464: while (n && (namesz != n->key.sz ||
3465: strncmp(n->key.p, name, namesz)))
1.92 schwarze 3466: n = n->next;
1.94 kristaps 3467:
3468: if (NULL == n) {
1.106 kristaps 3469: /* Create a new string table entry. */
1.166 kristaps 3470: n = mandoc_malloc(sizeof(struct roffkv));
3471: n->key.p = mandoc_strndup(name, namesz);
3472: n->key.sz = namesz;
3473: n->val.p = NULL;
3474: n->val.sz = 0;
1.164 kristaps 3475: n->next = *r;
3476: *r = n;
1.193 schwarze 3477: } else if (0 == append) {
1.166 kristaps 3478: free(n->val.p);
3479: n->val.p = NULL;
3480: n->val.sz = 0;
1.106 kristaps 3481: }
3482:
3483: if (NULL == string)
3484: return;
3485:
3486: /*
3487: * One additional byte for the '\n' in multiline mode,
3488: * and one for the terminating '\0'.
3489: */
1.193 schwarze 3490: newch = stringsz + (1 < append ? 2u : 1u);
1.164 kristaps 3491:
1.166 kristaps 3492: if (NULL == n->val.p) {
3493: n->val.p = mandoc_malloc(newch);
3494: *n->val.p = '\0';
1.106 kristaps 3495: oldch = 0;
3496: } else {
1.166 kristaps 3497: oldch = n->val.sz;
3498: n->val.p = mandoc_realloc(n->val.p, oldch + newch);
1.106 kristaps 3499: }
3500:
3501: /* Skip existing content in the destination buffer. */
1.166 kristaps 3502: c = n->val.p + (int)oldch;
1.106 kristaps 3503:
3504: /* Append new content to the destination buffer. */
1.164 kristaps 3505: i = 0;
3506: while (i < (int)stringsz) {
1.106 kristaps 3507: /*
3508: * Rudimentary roff copy mode:
3509: * Handle escaped backslashes.
3510: */
1.164 kristaps 3511: if ('\\' == string[i] && '\\' == string[i + 1])
3512: i++;
3513: *c++ = string[i++];
1.106 kristaps 3514: }
1.94 kristaps 3515:
1.106 kristaps 3516: /* Append terminating bytes. */
1.193 schwarze 3517: if (1 < append)
1.106 kristaps 3518: *c++ = '\n';
1.163 kristaps 3519:
1.106 kristaps 3520: *c = '\0';
1.166 kristaps 3521: n->val.sz = (int)(c - n->val.p);
1.92 schwarze 3522: }
3523:
1.94 kristaps 3524: static const char *
1.315 schwarze 3525: roff_getstrn(const struct roff *r, const char *name, size_t len,
3526: int *deftype)
1.92 schwarze 3527: {
1.315 schwarze 3528: const struct roffkv *n;
3529: int i;
3530: enum roff_tok tok;
3531:
3532: if (*deftype & ROFFDEF_USER) {
3533: for (n = r->strtab; n != NULL; n = n->next) {
3534: if (strncmp(name, n->key.p, len) == 0 &&
3535: n->key.p[len] == '\0' &&
3536: n->val.p != NULL) {
3537: *deftype = ROFFDEF_USER;
3538: return n->val.p;
3539: }
3540: }
3541: }
3542: if (*deftype & ROFFDEF_PRE) {
3543: for (i = 0; i < PREDEFS_MAX; i++) {
3544: if (strncmp(name, predefs[i].name, len) == 0 &&
3545: predefs[i].name[len] == '\0') {
3546: *deftype = ROFFDEF_PRE;
3547: return predefs[i].str;
3548: }
3549: }
3550: }
3551: if (*deftype & ROFFDEF_REN) {
3552: for (n = r->rentab; n != NULL; n = n->next) {
3553: if (strncmp(name, n->key.p, len) == 0 &&
3554: n->key.p[len] == '\0' &&
3555: n->val.p != NULL) {
3556: *deftype = ROFFDEF_REN;
3557: return n->val.p;
3558: }
3559: }
3560: }
3561: if (*deftype & ROFFDEF_STD) {
3562: if (r->man->macroset != MACROSET_MAN) {
3563: for (tok = MDOC_Dd; tok < MDOC_MAX; tok++) {
3564: if (strncmp(name, roff_name[tok], len) == 0 &&
3565: roff_name[tok][len] == '\0') {
3566: *deftype = ROFFDEF_STD;
3567: return NULL;
3568: }
3569: }
3570: }
3571: if (r->man->macroset != MACROSET_MDOC) {
3572: for (tok = MAN_TH; tok < MAN_MAX; tok++) {
3573: if (strncmp(name, roff_name[tok], len) == 0 &&
3574: roff_name[tok][len] == '\0') {
3575: *deftype = ROFFDEF_STD;
3576: return NULL;
3577: }
3578: }
3579: }
3580: }
3581: *deftype = 0;
1.277 schwarze 3582: return NULL;
1.92 schwarze 3583: }
3584:
1.94 kristaps 3585: static void
1.167 kristaps 3586: roff_freestr(struct roffkv *r)
1.92 schwarze 3587: {
1.166 kristaps 3588: struct roffkv *n, *nn;
1.92 schwarze 3589:
1.167 kristaps 3590: for (n = r; n; n = nn) {
1.166 kristaps 3591: free(n->key.p);
3592: free(n->val.p);
1.92 schwarze 3593: nn = n->next;
3594: free(n);
3595: }
1.114 kristaps 3596: }
1.266 schwarze 3597:
3598: /* --- accessors and utility functions ------------------------------------ */
1.114 kristaps 3599:
3600: const struct tbl_span *
3601: roff_span(const struct roff *r)
3602: {
1.207 schwarze 3603:
1.277 schwarze 3604: return r->tbl ? tbl_span(r->tbl) : NULL;
1.125 kristaps 3605: }
3606:
3607: const struct eqn *
3608: roff_eqn(const struct roff *r)
3609: {
1.207 schwarze 3610:
1.277 schwarze 3611: return r->last_eqn ? &r->last_eqn->eqn : NULL;
1.164 kristaps 3612: }
3613:
3614: /*
3615: * Duplicate an input string, making the appropriate character
3616: * conversations (as stipulated by `tr') along the way.
3617: * Returns a heap-allocated string with all the replacements made.
3618: */
3619: char *
3620: roff_strdup(const struct roff *r, const char *p)
3621: {
1.166 kristaps 3622: const struct roffkv *cp;
1.164 kristaps 3623: char *res;
3624: const char *pp;
3625: size_t ssz, sz;
3626: enum mandoc_esc esc;
3627:
1.167 kristaps 3628: if (NULL == r->xmbtab && NULL == r->xtab)
1.277 schwarze 3629: return mandoc_strdup(p);
1.164 kristaps 3630: else if ('\0' == *p)
1.277 schwarze 3631: return mandoc_strdup("");
1.164 kristaps 3632:
3633: /*
3634: * Step through each character looking for term matches
3635: * (remember that a `tr' can be invoked with an escape, which is
3636: * a glyph but the escape is multi-character).
3637: * We only do this if the character hash has been initialised
3638: * and the string is >0 length.
3639: */
3640:
3641: res = NULL;
3642: ssz = 0;
3643:
3644: while ('\0' != *p) {
1.289 schwarze 3645: assert((unsigned int)*p < 128);
3646: if ('\\' != *p && r->xtab && r->xtab[(unsigned int)*p].p) {
1.167 kristaps 3647: sz = r->xtab[(int)*p].sz;
3648: res = mandoc_realloc(res, ssz + sz + 1);
3649: memcpy(res + ssz, r->xtab[(int)*p].p, sz);
3650: ssz += sz;
3651: p++;
3652: continue;
3653: } else if ('\\' != *p) {
3654: res = mandoc_realloc(res, ssz + 2);
3655: res[ssz++] = *p++;
3656: continue;
3657: }
3658:
1.164 kristaps 3659: /* Search for term matches. */
1.167 kristaps 3660: for (cp = r->xmbtab; cp; cp = cp->next)
1.166 kristaps 3661: if (0 == strncmp(p, cp->key.p, cp->key.sz))
1.164 kristaps 3662: break;
3663:
3664: if (NULL != cp) {
3665: /*
3666: * A match has been found.
3667: * Append the match to the array and move
3668: * forward by its keysize.
3669: */
1.207 schwarze 3670: res = mandoc_realloc(res,
3671: ssz + cp->val.sz + 1);
1.166 kristaps 3672: memcpy(res + ssz, cp->val.p, cp->val.sz);
3673: ssz += cp->val.sz;
3674: p += (int)cp->key.sz;
1.164 kristaps 3675: continue;
3676: }
3677:
1.167 kristaps 3678: /*
3679: * Handle escapes carefully: we need to copy
3680: * over just the escape itself, or else we might
3681: * do replacements within the escape itself.
3682: * Make sure to pass along the bogus string.
3683: */
3684: pp = p++;
3685: esc = mandoc_escape(&p, NULL, NULL);
3686: if (ESCAPE_ERROR == esc) {
3687: sz = strlen(pp);
1.164 kristaps 3688: res = mandoc_realloc(res, ssz + sz + 1);
3689: memcpy(res + ssz, pp, sz);
1.167 kristaps 3690: break;
1.164 kristaps 3691: }
1.207 schwarze 3692: /*
3693: * We bail out on bad escapes.
1.167 kristaps 3694: * No need to warn: we already did so when
3695: * roff_res() was called.
3696: */
3697: sz = (int)(p - pp);
3698: res = mandoc_realloc(res, ssz + sz + 1);
3699: memcpy(res + ssz, pp, sz);
3700: ssz += sz;
1.164 kristaps 3701: }
3702:
3703: res[(int)ssz] = '\0';
1.277 schwarze 3704: return res;
1.227 schwarze 3705: }
3706:
3707: int
3708: roff_getformat(const struct roff *r)
3709: {
3710:
1.277 schwarze 3711: return r->format;
1.174 kristaps 3712: }
3713:
3714: /*
1.207 schwarze 3715: * Find out whether a line is a macro line or not.
1.174 kristaps 3716: * If it is, adjust the current position and return one; if it isn't,
3717: * return zero and don't change the current position.
3718: * If the control character has been set with `.cc', then let that grain
3719: * precedence.
3720: * This is slighly contrary to groff, where using the non-breaking
3721: * control character when `cc' has been invoked will cause the
3722: * non-breaking macro contents to be printed verbatim.
3723: */
3724: int
3725: roff_getcontrol(const struct roff *r, const char *cp, int *ppos)
3726: {
3727: int pos;
3728:
3729: pos = *ppos;
3730:
1.303 schwarze 3731: if (r->control != '\0' && cp[pos] == r->control)
1.174 kristaps 3732: pos++;
1.303 schwarze 3733: else if (r->control != '\0')
1.277 schwarze 3734: return 0;
1.174 kristaps 3735: else if ('\\' == cp[pos] && '.' == cp[pos + 1])
3736: pos += 2;
3737: else if ('.' == cp[pos] || '\'' == cp[pos])
3738: pos++;
3739: else
1.277 schwarze 3740: return 0;
1.174 kristaps 3741:
3742: while (' ' == cp[pos] || '\t' == cp[pos])
3743: pos++;
3744:
3745: *ppos = pos;
1.277 schwarze 3746: return 1;
1.74 kristaps 3747: }
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